race condition where gather transcribe is restarted after final transcript

more logging on restart of transcribing during gather
lint
2026-02-11 08:51:13 +00:00 · 2024-05-21 19:04:55 -04:00 · 2024-05-10 14:12:34 -04:00 · 2024-05-03 08:56:55 -04:00 · 2024-05-03 08:55:16 -04:00 · 2024-04-01 13:03:52 -04:00
26 changed files with 6294 additions and 5077 deletions
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,10 +6,10 @@ jobs:
  build:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
        with:
-          node-version: 20
+          node-version: 18
      - run: npm ci
      - run: npm run jslint
      - run: docker pull drachtio/sipp
--- a/lib/session/call-session.js
+++ b/lib/session/call-session.js
@@ -14,7 +14,6 @@ const moment = require('moment');
 const assert = require('assert');
 const sessionTracker = require('./session-tracker');
 const makeTask = require('../tasks/make_task');
-const parseDecibels = require('../utils/parse-decibels');
 const { normalizeJambones } = require('@jambonz/verb-specifications');
 const listTaskNames = require('../utils/summarize-tasks');
 const HttpRequestor = require('../utils/http-requestor');
@@ -112,19 +111,13 @@ class CallSession extends Emitter {
      this.requestor.removeAllListeners();
      this.application.requestor = newRequestor;
      this.requestor.on('command', this._onCommand.bind(this));
-      this.logger.debug(`CallSession: ${this.callSid} listener count ${this.requestor.listenerCount('command')}`);
      this.requestor.on('connection-dropped', this._onWsConnectionDropped.bind(this));
      this.requestor.on('handover', handover.bind(this));
-      this.requestor.on('reconnect-error', this._onSessionReconnectError.bind(this));
    };

-    if (!this.isConfirmCallSession) {
-      this.requestor.on('command', this._onCommand.bind(this));
-      this.logger.debug(`CallSession: ${this.callSid} listener count ${this.requestor.listenerCount('command')}`);
-      this.requestor.on('connection-dropped', this._onWsConnectionDropped.bind(this));
-      this.requestor.on('handover', handover.bind(this));
-      this.requestor.on('reconnect-error', this._onSessionReconnectError.bind(this));
-    }
+    this.requestor.on('command', this._onCommand.bind(this));
+    this.requestor.on('connection-dropped', this._onWsConnectionDropped.bind(this));
+    this.requestor.on('handover', handover.bind(this));
  }

  /**
@@ -195,24 +188,6 @@ class CallSession extends Emitter {
    this._synthesizer = synth;
  }

-  /**
-   * ASR TTS fallback
-   */
-  get hasFallbackAsr() {
-    return this._hasFallbackAsr || false;
-  }
-
-  set hasFallbackAsr(i) {
-    this._hasFallbackAsr = i;
-  }
-
-  get hasFallbackTts() {
-    return this._hasFallbackTts || false;
-  }
-
-  set hasFallbackTts(i) {
-    this._hasFallbackTts = i;
-  }
  /**
   * default vendor to use for speech synthesis if not provided in the app
   */
@@ -515,14 +490,6 @@ class CallSession extends Emitter {
  set actionHookDelayActions(e) {
    this._actionHookDelayActions = e;
  }
-  // Getter/setter for current tts vendor
-  get currentTtsVendor() {
-    return this._currentTtsVendor;
-  }
-
-  set currentTtsVendor(vendor) {
-    this._currentTtsVendor = vendor;
-  }

  hasGlobalSttPunctuation() {
    return this._globalSttPunctuation !== undefined;
@@ -544,18 +511,6 @@ class CallSession extends Emitter {
    this.speechSynthesisVoice = this._origSynthesizerSettings.voice;
  }

-  enableFillerNoise(opts) {
-    this._fillerNoise = opts;
-  }
-
-  disableFillerNoise() {
-    this._fillerNoise = null;
-  }
-
-  get fillerNoise() {
-    return this._fillerNoise;
-  }
-
  async notifyRecordOptions(opts) {
    const {action} = opts;
    this.logger.debug({opts}, 'CallSession:notifyRecordOptions');
@@ -730,7 +685,7 @@ class CallSession extends Emitter {
      task = await this.backgroundTaskManager.newTask('bargeIn', gather);
      task.sticky = autoEnable;
      // listen to the bargein-done from background manager
-      this.backgroundTaskManager.on('bargeIn-done', () => {
+      this.backgroundTaskManager.once('bargeIn-done', () => {
        if (this.requestor instanceof WsRequestor) {
          try {
            this.kill(true);
@@ -743,8 +698,6 @@ class CallSession extends Emitter {
    }
  }
  async disableBotMode() {
-    const task = this.backgroundTaskManager.getTask('bargeIn');
-    if (task) task.sticky = false;
    this.backgroundTaskManager.stop('bargeIn');
  }

@@ -812,7 +765,6 @@ class CallSession extends Emitter {
            speech_credential_sid: credential.speech_credential_sid,
            accessKeyId: credential.access_key_id,
            secretAccessKey: credential.secret_access_key,
-            roleArn: credential.role_arn,
            region: credential.aws_region || AWS_REGION
          };
        }
@@ -884,19 +836,6 @@ class CallSession extends Emitter {
            model_id: credential.model_id,
            options: credential.options
          };
-        } else if ('playht' === vendor) {
-          return {
-            api_key: credential.api_key,
-            user_id: credential.user_id,
-            voice_engine: credential.voice_engine,
-            options: credential.options
-          };
-        } else if ('rimelabs' === vendor) {
-          return {
-            api_key: credential.api_key,
-            model_id: credential.model_id,
-            options: credential.options
-          };
        } else if ('assemblyai' === vendor) {
          return {
            speech_credential_sid: credential.speech_credential_sid,
@@ -938,6 +877,7 @@ class CallSession extends Emitter {
      const taskNum = ++this.taskIdx;
      const stackNum = this.stackIdx;
      const task = this.tasks.shift();
+      task._stackNum = `${stackNum}:${taskNum}`;
      this.logger.info(`CallSession:exec starting task #${stackNum}:${taskNum}: ${task.name}`);
      this._notifyTaskStatus(task, {event: 'starting'});
      // Register verbhook span wait for end
@@ -1273,15 +1213,7 @@ class CallSession extends Emitter {
    this.callInfo.customerData = tag;
  }

-  async _lccConferenceParticipantAction(opts) {
-    const task = this.currentTask;
-    if (!task || TaskName.Conference !== task.name || !this.isInConference) {
-      return this.logger.info('CallSession:_lccConferenceParticipantState - invalid cmd, call is not in conference');
-    }
-    task.doConferenceParticipantAction(this, opts);
-  }
-
-  async _lccMuteStatus(mute, callSid) {
+  async _lccMuteStatus(callSid, mute) {
    // this whole thing requires us to be in a Dial or Conference verb
    const task = this.currentTask;
    if (!task || ![TaskName.Dial, TaskName.Conference].includes(task.name)) {
@@ -1413,70 +1345,6 @@ Duration=${duration} `
    task.whisper(tasks, callSid).catch((err) => this.logger.error(err, 'CallSession:_lccWhisper'));
  }

-  async _lccConfig(opts) {
-    this.logger.debug({opts}, 'CallSession:_lccConfig');
-    const t = normalizeJambones(this.logger, [
-      {
-        verb: 'config',
-        ...opts
-      }
-    ])
-      .map((tdata) => makeTask(this.logger, tdata));
-
-    const task = t[0];
-
-    const {span, ctx} = this.rootSpan.startChildSpan(`verb:${task.summary}`);
-    span.setAttributes({'verb.summary': task.summary});
-    task.span = span;
-    task.ctx = ctx;
-    try {
-      await task.exec(this, {ep: this.ep});
-    } catch (err) {
-      this.logger.error(err, 'CallSession:_lccConfig');
-    }
-    task.span.end();
-  }
-
-  async _lccDub(opts, callSid) {
-    this.logger.debug({opts}, `CallSession:_lccDub on call_sid ${callSid}`);
-    const t = normalizeJambones(this.logger, [
-      {
-        verb: 'dub',
-        ...opts
-      }
-    ])
-      .map((tdata) => makeTask(this.logger, tdata));
-
-    const task = t[0];
-    const ep = this.currentTask?.name === TaskName.Dial && callSid === this.currentTask?.callSid ?
-      this.currentTask.ep :
-      this.ep;
-
-    const {span, ctx} = this.rootSpan.startChildSpan(`verb:${task.summary}`);
-    span.setAttributes({'verb.summary': task.summary});
-    task.span = span;
-    task.ctx = ctx;
-    try {
-      await task.exec(this, {ep});
-    } catch (err) {
-      this.logger.error(err, 'CallSession:_lccDub');
-    }
-    task.span.end();
-  }
-
-
-  async _lccBoostAudioSignal(opts, callSid) {
-    const ep = this.currentTask?.name === TaskName.Dial && callSid === this.currentTask?.callSid ?
-      this.currentTask.ep :
-      this.ep;
-    const db = parseDecibels(opts);
-    this.logger.info(`_lccBoostAudioSignal: boosting audio signal by ${db} dB`);
-    const args = [ep.uuid, 'setGain', db];
-    const response = await ep.api('uuid_dub', args);
-    this.logger.info({response}, '_lccBoostAudioSignal: response from freeswitch');
-  }
-
-
  /**
   * perform call hangup by jambonz
   */
@@ -1507,7 +1375,7 @@ Duration=${duration} `
      await this._lccTranscribeStatus(opts);
    }
    else if (opts.mute_status) {
-      await this._lccMuteStatus(opts.mute_status === 'mute', callSid);
+      await this._lccMuteStatus(callSid, opts.mute_status === 'mute');
    }
    else if (opts.conf_hold_status) {
      await this._lccConfHoldStatus(opts);
@@ -1527,15 +1395,6 @@ Duration=${duration} `
    else if (opts.tag) {
      return this._lccTag(opts);
    }
-    else if (opts.conferenceParticipantAction) {
-      return this._lccConferenceParticipantState(opts);
-    }
-    else if (opts.dub) {
-      return this._lccDub(opts);
-    }
-    else if (opts.boostAudioSignal) {
-      return this._lccBoostAudioSignal(opts, callSid);
-    }

    // whisper may be the only thing we are asked to do, or it may that
    // we are doing a whisper after having muted, paused recording etc..
@@ -1627,23 +1486,7 @@ Duration=${duration} `
  }

  _preCacheAudio(newTasks) {
-    /**
-     * only precache audio for the a queued say if we have one or more non-Config verbs
-     * ahead of it in the queue.  This is because the Config verb returns immediately
-     * and would not give us enough time to generate the audio.  The point of precaching
-     * is to take advantage of getting the audio in advance of being needed, so we need
-     * to be confident we have some time before the say verb is executed, and the Config
-     * does not give us that confidence since it returns immediately.
-     */
-    const haveQueuedNonConfig = this.tasks.findIndex((t) => t.name !== TaskName.Config) !== -1;
-    let tasks = haveQueuedNonConfig ? newTasks : [];
-    if (!haveQueuedNonConfig) {
-      const idxFirstNotConfig = newTasks.findIndex((t) => t.name !== TaskName.Config);
-      if (-1 === idxFirstNotConfig) return;
-      tasks = newTasks.slice(idxFirstNotConfig + 1);
-    }
-
-    for (const task of tasks) {
+    for (const task of newTasks) {
      if (task.name === TaskName.Config && task.hasSynthesizer) {
        /* if they change synthesizer settings don't try to precache */
        break;
@@ -1715,22 +1558,6 @@ Duration=${duration} `
    }, 'CallSession:_injectTasks - completed');
  }

-  async _onSessionReconnectError(err) {
-    const {writeAlerts, AlertType} = this.srf.locals;
-    const sid = this.accountInfo.account.account_sid;
-    this.logger.info({err}, `_onSessionReconnectError for account ${sid}`);
-    try {
-      await writeAlerts({
-        alert_type: AlertType.WEBHOOK_CONNECTION_FAILURE,
-        account_sid: this.accountSid,
-        detail: `Session:reconnect error ${err}`
-      });
-    } catch (error) {
-      this.logger.error({error}, 'Error writing WEBHOOK_CONNECTION_FAILURE alert');
-    }
-    this._jambonzHangup();
-  }
-
  _onCommand({msgid, command, call_sid, queueCommand, data}) {
    this.logger.info({msgid, command, queueCommand, data}, 'CallSession:_onCommand - received command');
    let resolution;
@@ -1767,24 +1594,16 @@ Duration=${duration} `
        this._lccCallStatus(data);
        break;

-      case 'config':
-        this._lccConfig(data, call_sid);
-        break;
-
      case 'dial':
        this._lccCallDial(data);
        break;

-      case 'dub':
-        this._lccDub(data, call_sid);
-        break;
-
      case 'record':
        this.notifyRecordOptions(data);
        break;

      case 'mute:status':
-        this._lccMuteStatus(data, call_sid);
+        this._lccMuteStatus(call_sid, data);
        break;

      case 'conf:mute-status':
@@ -1795,10 +1614,6 @@ Duration=${duration} `
        this._lccConfHoldStatus(data);
        break;

-      case 'conf:participant-action':
-        this._lccConferenceParticipantAction(data);
-        break;
-
      case 'listen:status':
        this._lccListenStatus(data);
        break;
@@ -1825,13 +1640,6 @@ Duration=${duration} `
          });
        break;

-      case 'boostAudioSignal':
-        this._lccBoostAudioSignal(data, call_sid)
-          .catch((err) => {
-            this.logger.info({err, data}, 'CallSession:_onCommand - error boosting audio signal');
-          });
-        break;
-
      default:
        this.logger.info(`CallSession:_onCommand - invalid command ${command}`);
    }
@@ -2025,7 +1833,6 @@ Duration=${duration} `
  /**
   * called when the caller has hung up.  Provided for subclasses to override
   * in order to apply logic at this point if needed.
-   * return true if success fallback, return false if not
   */
  _callerHungup() {
    assert(false, 'subclass responsibility to override this method');
@@ -2086,10 +1893,6 @@ Duration=${duration} `
      }
      this.logger.debug(`CallSession:propagateAnswer - answered callSid ${this.callSid}`);
    }
-    else {
-      this.logger.debug('CallSession:propagateAnswer - call already answered - re-anchor media with a reinvite');
-      await this.dlg.modify(this.ep.local.sdp);
-    }
  }

  async _onRequestWithinDialog(req, res) {
@@ -2467,7 +2270,6 @@ Duration=${duration} `

  _startActionHookNoResponseTimer(options) {
    this._clearActionHookNoResponseTimer();
-    this._actionHookDelayResolved = false;
    if (options.noResponseTimeoutMs) {
      this.logger.debug(`CallSession:_startActionHookNoResponseTimer ${options.noResponseTimeoutMs}`);
      this._actionHookNoResponseTimer = setTimeout(() => {
@@ -2481,9 +2283,7 @@ Duration=${duration} `
        if (t.length) {
          t[0].on('playDone', (err) => {
            if (err) this.logger.error({err}, `Call-Session:exec Error delay action, play ${verb}`);
-            if (!this._actionHookDelayResolved) {
-              this._startActionHookNoResponseTimer(options);
-            }
+            this._startActionHookNoResponseTimer(options);
          });
        }
        this.tasks.push(...t);
@@ -2501,16 +2301,7 @@ Duration=${duration} `

  _clearActionHookNoResponseTimer() {
    if (this._actionHookNoResponseTimer) {
-      // Action Hook delay is solved.
-      this._actionHookDelayResolved = true;
      clearTimeout(this._actionHookNoResponseTimer);
-      // if delay action is enabled
-      // and bot has responded with list of new verbs
-      // Only kill current running play task.
-      //https://github.com/jambonz/jambonz-feature-server/issues/710
-      if (this.currentTask?.name === TaskName.Play) {
-        this.currentTask.kill(this);
-      }
    }
    this._actionHookNoResponseTimer = null;
  }
--- a/lib/tasks/answer.js
+++ b/lib/tasks/answer.js
@@ -1,22 +0,0 @@
-const Task = require('./task');
-const {TaskName, TaskPreconditions} = require('../utils/constants');
-
-/**
- * Answer the call.
- * Note: This is rarely used, as the call is typically answered automatically when required by the app,
- * but it can be useful to force an answer before a pause in some cases
- */
-class TaskAnswer extends Task {
-  constructor(logger, opts) {
-    super(logger, opts);
-    this.preconditions = TaskPreconditions.Endpoint;
-  }
-
-  get name() { return TaskName.Answer; }
-
-  async exec(cs) {
-    super.exec(cs);
-  }
-}
-
-module.exports = TaskAnswer;
--- a/lib/tasks/conference.js
+++ b/lib/tasks/conference.js
@@ -60,8 +60,6 @@ class Conference extends Task {

    this.emitter = new Emitter();
    this.results = {};
-    this.coaching = [];
-    this.speakOnlyTo = this.data.speakOnlyTo;

    // transferred from another server in order to bridge to a local caller?
    if (this.data._ && this.data._.connectTime) {
@@ -350,27 +348,16 @@ class Conference extends Task {
      Object.assign(opts, {flags: {
        ...(this.endConferenceOnExit && {endconf: true}),
        ...(this.startConferenceOnEnter && {moderator: true}),
-        ...((this.joinMuted || this.speakOnlyTo) && {joinMuted: true}),
+        ...(this.joinMuted && {joinMuted: true}),
      }});
-
-      /**
-       * Note on the above: if we are joining in "coaching" mode (ie only going to heard by a subset of participants)
-       * then we join muted temporarily, and then unmute ourselves once we have identified the subset of participants
-       * to whom we will be speaking.
-       */
    }

    try {
      const {memberId, confUuid} = await this.ep.join(this.confName, opts);
      this.logger.debug({memberId, confUuid}, `Conference:_joinConference: successfully joined ${this.confName}`);
-      this.memberId = parseInt(memberId, 10);
+      this.memberId = memberId;
      this.confUuid = confUuid;

-      // set a tag for this member, if provided
-      if (this.data.memberTag) {
-        this.setMemberTag(this.data.memberTag);
-      }
-
      cs.setConferenceDetails(memberId, this.confName, confUuid);
      const response = await this.ep.api('conference', [this.confName, 'get', 'count']);
      if (response.body && /\d+/.test(response.body)) this.participantCount = parseInt(response.body);
@@ -397,9 +384,6 @@ class Conference extends Task {
          .catch((err) => {});
      }

-      if (this.speakOnlyTo) {
-        this.setCoachMode(this.speakOnlyTo);
-      }
    } catch (err) {
      this.logger.error(err, `Failed to join conference ${this.confName}`);
      throw err;
@@ -444,15 +428,7 @@ class Conference extends Task {
    }
  }

-  doConferenceMute(cs, opts) {
-    assert (cs.isInConference);
-
-    const mute = opts.conf_mute_status === 'mute';
-    this.ep.api(`conference ${this.confName} ${mute ? 'mute' : 'unmute'} ${this.memberId}`)
-      .catch((err) => this.logger.info({err}, 'Error muting or unmuting participant'));
-  }
-
-  doConferenceHold(cs, opts) {
+  async doConferenceHold(cs, opts) {
    assert (cs.isInConference);

    const {conf_hold_status, wait_hook} = opts;
@@ -489,40 +465,6 @@ class Conference extends Task {
    }
  }

-  async doConferenceParticipantAction(cs, opts) {
-    const {action, tag} = opts;
-
-    switch (action) {
-      case 'tag':
-        await this.setMemberTag(tag);
-        break;
-      case 'untag':
-        await this.clearMemberTag();
-        break;
-      case 'coach':
-        await this.setCoachMode(tag);
-        break;
-      case 'uncoach':
-        await this.clearCoachMode();
-        break;
-      case 'hold':
-        this.doConferenceHold(cs, {conf_hold_status: 'hold'});
-        break;
-      case 'unhold':
-        this.doConferenceHold(cs, {conf_hold_status: 'unhold'});
-        break;
-      case 'mute':
-        this.doConferenceMute(cs, {conf_mute_status: 'mute'});
-        break;
-      case 'unmute':
-        this.doConferenceMute(cs, {conf_mute_status: 'unmute'});
-        break;
-      default:
-        this.logger.info(`Conference:doConferenceParticipantState - unhandled action ${action}`);
-        break;
-    }
-  }
-
  async _doWaitHookWhileOnHold(cs, dlg, wait_hook) {
    do {
      try {
@@ -588,7 +530,7 @@ class Conference extends Task {
      const response = await this.ep.api('conference', [this.confName, 'get', 'count']);
      if (response.body && confNoMatch(response.body)) this.participantCount = 0;
      else if (response.body && /^\d+$/.test(response.body)) this.participantCount = parseInt(response.body) - 1;
-      this.logger.debug(`Conference:_doFinalMemberCheck conference count ${this.participantCount}`);
+      this.logger.debug({response}, `Conference:_doFinalMemberCheck conference count ${this.participantCount}`);
    } catch (err) {
      this.logger.info({err}, 'Conference:_doFinalMemberCheck error retrieving count (we were probably kicked');
    }
@@ -700,19 +642,11 @@ class Conference extends Task {
  }

  // conference event handlers
-  _onAddMember(logger, cs, evt) {
-    const memberId = parseInt(evt.getHeader('Member-ID')) ;
-    if (this.speakOnlyTo) {
-      logger.debug(`Conference:_onAddMember - member ${memberId} added to ${this.confName}, updating coaching mode`);
-      this.setCoachMode(this.speakOnlyTo).catch(() => {});
-    }
-    else logger.debug(`Conference:_onAddMember - member ${memberId} added to conference ${this.confName}`);
-  }
  _onDelMember(logger, cs, evt) {
    const memberId = parseInt(evt.getHeader('Member-ID')) ;
    this.participantCount = parseInt(evt.getHeader('Conference-Size'));
    if (memberId === this.memberId) {
-      logger.info(`Conference:_onDelMember - I was dropped from conference ${this.confName}, task is complete`);
+      this.logger.info(`Conference:_onDelMember - I was dropped from conference ${this.confName}, task is complete`);
      this.replaceEndpointAndEnd(cs);
    }
  }
@@ -741,89 +675,6 @@ class Conference extends Task {
    }
  }

-  _onTag(logger, cs, evt) {
-    const memberId = parseInt(evt.getHeader('Member-ID')) ;
-    const tag = evt.getHeader('Tag') || '';
-    if (memberId !== this.memberId && this.speakOnlyTo) {
-      logger.info(`Conference:_onTag - member ${memberId} set tag to '${tag }'; updating coach mode accordingly`);
-      this.setCoachMode(this.speakOnlyTo).catch(() => {});
-    }
-  }
-
-  /**
-   * Set the conference to "coaching" mode, where the audio of the participant is only heard
-   * by a subset of the participants in the conference.
-   * We do this by first getting all of the members who do *not* have this tag, and then
-   * we configure this members audio to not be sent to them.
-   * @param {string} speakOnlyTo - tag of the members who should receive our audio
-   *
-   * N.B.: this feature requires jambonz patches to freeswitch mod_conference
-   */
-  async setCoachMode(speakOnlyTo) {
-    this.speakOnlyTo = speakOnlyTo;
-    if (!this.memberId) {
-      this.logger.info('Conference:_setCoachMode: no member id yet');
-      return;
-    }
-    try {
-      const members = (await this.ep.getNonMatchingConfParticipants(this.confName, speakOnlyTo))
-        .filter((m) => m !== this.memberId);
-      if (members.length === 0) {
-        this.logger.info({members}, 'Conference:_setCoachMode: all participants have the tag, so all will hear me');
-        if (this.coaching.length) {
-          await this.ep.api('conference', [this.confName, 'relate', this.memberId, this.coaching.join(','), 'clear']);
-          this.coaching = [];
-        }
-      }
-      else {
-        const memberList = members.join(',');
-        this.logger.info(`Conference:_setCoachMode: my audio will NOT be sent to ${memberList}`);
-        await this.ep.api('conference', [this.confName, 'relate', this.memberId, memberList, 'nospeak']);
-        this.coaching = members;
-      }
-    } catch (err) {
-      this.logger.error({err, speakOnlyTo}, '_setCoachMode: Error');
-    }
-  }
-
-  async clearCoachMode() {
-    if (!this.memberId) return;
-    try {
-      if (this.coaching.length === 0) {
-        this.logger.info('Conference:_clearCoachMode: no coaching mode to clear');
-      }
-      else {
-        const memberList = this.coaching.join(',');
-        this.logger.info(`Conference:_clearCoachMode: now sending my audio to all, including ${memberList}`);
-        await this.ep.api('conference', [this.confName, 'relate', this.memberId, memberList, 'clear']);
-      }
-      this.speakOnlyTo = null;
-      this.coaching = [];
-    } catch (err) {
-      this.logger.error({err}, '_clearCoachMode: Error');
-    }
-  }
-
-  async setMemberTag(tag) {
-    try {
-      await this.ep.api('conference', [this.confName, 'tag', this.memberId, tag]);
-      this.logger.info(`Conference:setMemberTag: set tag for ${this.memberId} to ${tag}`);
-      this.memberTag = tag;
-    } catch (err) {
-      this.logger.error({err}, `Error setting tag for ${this.memberId} to ${tag}`);
-    }
-  }
-
-  async clearMemberTag() {
-    try {
-      await this.ep.api('conference', [this.confName, 'tag', this.memberId]);
-      this.logger.info(`Conference:setMemberTag: clearing tag for ${this.memberId}`);
-      this.memberTag = null;
-    } catch (err) {
-      this.logger.error({err}, `Error clearing tag for ${this.memberId}`);
-    }
-  }
-
 }

 module.exports = Conference;
--- a/lib/tasks/config.js
+++ b/lib/tasks/config.js
@@ -1,11 +1,9 @@
 const Task = require('./task');
 const {TaskName, TaskPreconditions} = require('../utils/constants');
-const parseDecibels = require('../utils/parse-decibels');

 class TaskConfig extends Task {
  constructor(logger, opts) {
    super(logger, opts);
-
    [
      'synthesizer',
      'recognizer',
@@ -13,9 +11,7 @@ class TaskConfig extends Task {
      'record',
      'listen',
      'transcribe',
-      'fillerNoise',
-      'actionHookDelayAction',
-      'boostAudioSignal'
+      'actionHookDelayAction'
    ].forEach((k) => this[k] = this.data[k] || {});

    if ('notifyEvents' in this.data) {
@@ -54,7 +50,6 @@ class TaskConfig extends Task {
      this.record?.action ||
      this.listen?.url ||
      this.data.amd ||
-      'boostAudioSignal' in this.data ||
      this.transcribe?.enable) ?
      TaskPreconditions.Endpoint :
      TaskPreconditions.None;
@@ -69,8 +64,6 @@ class TaskConfig extends Task {
  get hasRecording() { return Object.keys(this.record).length; }
  get hasListen() { return Object.keys(this.listen).length; }
  get hasTranscribe() { return Object.keys(this.transcribe).length; }
-  get hasDub() { return Object.keys(this.dub).length; }
-  get hasFillerNoise() { return Object.keys(this.fillerNoise).length; }

  get summary() {
    const phrase = [];
@@ -96,11 +89,9 @@ class TaskConfig extends Task {
    if (this.hasTranscribe) {
      phrase.push(this.transcribe.enable ? `transcribe ${this.transcribe.transcriptionHook}` : 'stop transcribe');
    }
-    if (this.hasFillerNoise) phrase.push(`fillerNoise ${this.fillerNoise.enable ? 'on' : 'off'}`);
    if (this.data.amd) phrase.push('enable amd');
    if (this.notifyEvents) phrase.push(`event notification ${this.notifyEvents ? 'on' : 'off'}`);
    if (this.onHoldMusic) phrase.push(`onHoldMusic: ${this.onHoldMusic}`);
-    if ('boostAudioSignal' in this.data) phrase.push(`setGain ${this.data.boostAudioSignal}`);
    return `${this.name}{${phrase.join(',')}}`;
  }

@@ -259,7 +250,8 @@ class TaskConfig extends Task {
        cs.stopBackgroundTask('transcribe');
      }
    }
-    if (Object.keys(this.actionHookDelayAction).length !== 0) {
+
+    if (this.actionHookDelayAction) {
      cs.actionHookDelayEnabled = this.actionHookDelayAction.enabled || false;
      cs.actionHookNoResponseTimeout = this.actionHookDelayAction.noResponseTimeout || 0;
      cs.actionHookNoResponseGiveUpTimeout = this.actionHookDelayAction.noResponseGiveUpTimeout || 0;
@@ -269,24 +261,6 @@ class TaskConfig extends Task {
    if (this.data.sipRequestWithinDialogHook) {
      cs.sipRequestWithinDialogHook = this.data.sipRequestWithinDialogHook;
    }
-
-    if ('boostAudioSignal' in this.data) {
-      const db = parseDecibels(this.data.boostAudioSignal);
-      this.logger.info(`Config: boosting audio signal by ${db} dB`);
-      const args = [ep.uuid, 'setGain', db];
-      ep.api('uuid_dub', args).catch((err) => {
-        this.logger.error(err, 'Error boosting audio signal');
-      });
-    }
-
-    if (this.hasFillerNoise) {
-      const {enable, ...opts} = this.fillerNoise;
-      this.logger.info({fillerNoise: this.fillerNoise}, 'Config: fillerNoise');
-      if (!enable) cs.disableFillerNoise();
-      else {
-        cs.enableFillerNoise(opts);
-      }
-    }
  }

  async kill(cs) {
--- a/lib/tasks/dial.js
+++ b/lib/tasks/dial.js
@@ -14,7 +14,6 @@ const sessionTracker = require('../session/session-tracker');
 const DtmfCollector = require('../utils/dtmf-collector');
 const ConfirmCallSession = require('../session/confirm-call-session');
 const dbUtils = require('../utils/db-utils');
-const parseDecibels = require('../utils/parse-decibels');
 const debug = require('debug')('jambonz:feature-server');
 const {parseUri} = require('drachtio-srf');
 const {ANCHOR_MEDIA_ALWAYS, JAMBONZ_DISABLE_DIAL_PAI_HEADER} = require('../config');
@@ -102,7 +101,6 @@ class TaskDial extends Task {
    this.dtmfHook = this.data.dtmfHook;
    this.proxy = this.data.proxy;
    this.tag = this.data.tag;
-    this.boostAudioSignal = this.data.boostAudioSignal;

    if (this.dtmfHook) {
      const {parentDtmfCollector, childDtmfCollector} = parseDtmfOptions(logger, this.data.dtmfCapture || {});
@@ -120,9 +118,6 @@ class TaskDial extends Task {
    if (this.data.transcribe) {
      this.transcribeTask = makeTask(logger, {'transcribe' : this.data.transcribe}, this);
    }
-    if (this.data.dub && Array.isArray(this.data.dub) && this.data.dub.length > 0) {
-      this.dubTasks = this.data.dub.map((d) => makeTask(logger, {'dub': d}, this));
-    }

    this.results = {};
    this.bridged = false;
@@ -154,7 +149,6 @@ class TaskDial extends Task {
    this.cs.onHoldMusic ||
    ANCHOR_MEDIA_ALWAYS ||
    this.listenTask ||
-    this.dubTasks ||
    this.transcribeTask ||
    this.startAmd;

@@ -557,9 +551,9 @@ class TaskDial extends Task {
          const str = this.callerId || req.callingNumber || '';
          const callingNumber = str.startsWith('+') ? str.substring(1) : str;
          const voip_carrier_sid = await lookupCarrierByPhoneNumber(cs.accountSid, callingNumber);
+          this.logger.info(
+            `Dial:_attemptCalls: selected ${voip_carrier_sid} for requested phone number: ${callingNumber}`);
          if (voip_carrier_sid) {
-            this.logger.info(
-              `Dial:_attemptCalls: selected voip_carrier_sid ${voip_carrier_sid} for callingNumber: ${callingNumber}`);
            opts.headers['X-Requested-Carrier-Sid'] = voip_carrier_sid;
          }
        }
@@ -636,8 +630,6 @@ class TaskDial extends Task {
              await this._connectSingleDial(cs, sd);
            } catch (err) {
              this.logger.info({err}, 'Dial:_attemptCalls - Error calling _connectSingleDial ');
-              sd.removeAllListeners();
-              this.kill(cs);
            }
          })
          .on('decline', () => {
@@ -787,17 +779,6 @@ class TaskDial extends Task {
      dialCallSid: sd.callSid,
    });

-    if (this.dubTasks) {
-      for (const dub of this.dubTasks) {
-        try {
-          await dub.exec(cs, {ep: sd.ep});
-        }
-        catch (err) {
-          this.logger.error({err}, 'Dial:_selectSingleDial - error executing dubTask');
-        }
-      }
-    }
-
    if (this.parentDtmfCollector) this._installDtmfDetection(cs, cs.dlg);
    if (this.childDtmfCollector) this._installDtmfDetection(cs, this.dlg);
    if (cs.sipRequestWithinDialogHook) this._initSipIndialogRequestListener(cs, this.dlg);
@@ -812,18 +793,6 @@ class TaskDial extends Task {
      }
    }

-    /* boost audio signal if requested */
-    if (this.boostAudioSignal) {
-      try {
-        const db = parseDecibels(this.boostAudioSignal);
-        this.logger.info(`Dial: boosting audio signal by ${db} dB`);
-        const args = [this.ep.uuid, 'setGain', db];
-        await this.ep.api('uuid_dub', args);
-      } catch (err) {
-        this.logger.info({err}, 'Dial:_selectSingleDial - Error boosting audio signal');
-      }
-    }
-
    /* if we can release the media back to the SBC, do so now */
    if (this.canReleaseMedia) setTimeout(this._releaseMedia.bind(this, cs, sd), 200);
  }
--- a/lib/tasks/dub.js
+++ b/lib/tasks/dub.js
@@ -1,144 +0,0 @@
-const {TaskName} = require('../utils/constants');
-const TtsTask = require('./tts-task');
-const assert = require('assert');
-const parseDecibels = require('../utils/parse-decibels');
-
-/**
- * Dub task: add or remove additional audio tracks into the call
- */
-class TaskDub extends TtsTask {
-  constructor(logger, opts, parentTask) {
-    super(logger, opts, parentTask);
-
-    this.logger.debug({opts: this.data}, 'TaskDub constructor');
-    ['action', 'track', 'play', 'say', 'loop'].forEach((prop) => {
-      this[prop] = this.data[prop];
-    });
-    this.gain = parseDecibels(this.data.gain);
-
-    assert.ok(this.action, 'TaskDub: action is required');
-    assert.ok(this.track, 'TaskDub: track is required');
-  }
-
-  get name() { return TaskName.Dub; }
-
-  async exec(cs, {ep}) {
-    super.exec(cs);
-
-    try {
-      switch (this.action) {
-        case 'addTrack':
-          await this._addTrack(cs, ep);
-          break;
-        case 'removeTrack':
-          await this._removeTrack(cs, ep);
-          break;
-        case 'silenceTrack':
-          await this._silenceTrack(cs, ep);
-          break;
-        case 'playOnTrack':
-          await this._playOnTrack(cs, ep);
-          break;
-        case 'sayOnTrack':
-          await this._sayOnTrack(cs, ep);
-          break;
-        default:
-          throw new Error(`TaskDub: unsupported action ${this.action}`);
-      }
-    } catch (err) {
-      this.logger.error(err, 'Error executing dub task');
-    }
-  }
-
-  async _addTrack(cs, ep) {
-    this.logger.info(`adding track: ${this.track}`);
-    await ep.dub({
-      action: 'addTrack',
-      track: this.track
-    });
-
-    if (this.play) await this._playOnTrack(cs, ep);
-    else if (this.say) await this._sayOnTrack(cs, ep);
-  }
-
-  async _removeTrack(_cs, ep) {
-    this.logger.info(`removing track: ${this.track}`);
-    await ep.dub({
-      action: 'removeTrack',
-      track: this.track
-    });
-  }
-
-  async _silenceTrack(_cs, ep) {
-    this.logger.info(`silencing track: ${this.track}`);
-    await ep.dub({
-      action: 'silenceTrack',
-      track: this.track
-    });
-  }
-
-  async _playOnTrack(_cs, ep) {
-    this.logger.info(`playing on track: ${this.track}`);
-    await ep.dub({
-      action: 'playOnTrack',
-      track: this.track,
-      play: this.play,
-      loop: this.loop ? 'loop' : 'once',
-      gain: this.gain
-    });
-  }
-
-  async _sayOnTrack(cs, ep) {
-    const text = this.say.text || this.say;
-    this.synthesizer = this.say.synthesizer || {};
-
-    if (Object.keys(this.synthesizer).length) {
-      this.logger.info({synthesizer: this.synthesizer},
-        `saying on track ${this.track}: ${text} with synthesizer options`);
-    }
-    else {
-      this.logger.info(`saying on track ${this.track}: ${text}`);
-    }
-    this.synthesizer = this.synthesizer || {};
-
-    this.text = [text];
-
-    const vendor = this.synthesizer.vendor && this.synthesizer.vendor !== 'default' ?
-      this.synthesizer.vendor :
-      cs.speechSynthesisVendor;
-    const language = this.synthesizer.language && this.synthesizer.language !== 'default' ?
-      this.synthesizer.language :
-      cs.speechSynthesisLanguage ;
-    const voice =  this.synthesizer.voice && this.synthesizer.voice !== 'default' ?
-      this.synthesizer.voice :
-      cs.speechSynthesisVoice;
-    const label = this.synthesizer.label && this.synthesizer.label !== 'default' ?
-      this.synthesizer.label :
-      cs.speechSynthesisLabel;
-
-    const disableTtsStreaming = false;
-    const filepath = await this._synthesizeWithSpecificVendor(cs, ep, {
-      vendor, language, voice, label, disableTtsStreaming
-    });
-    assert.ok(filepath.length === 1, 'TaskDub: no filepath returned from synthesizer');
-
-    const path = filepath[0];
-    if (!path.startsWith('say:{')) {
-      /* we have a local file of mp3 or r8 of synthesized speech audio to play */
-      this.logger.info(`playing synthesized speech from file on track ${this.track}: ${path}`);
-      this.play = path;
-      await this._playOnTrack(cs, ep);
-    }
-    else {
-      this.logger.info(`doing actual text to speech file on track ${this.track}: ${path}`);
-      await ep.dub({
-        action: 'sayOnTrack',
-        track: this.track,
-        say: path,
-        gain: this.gain
-      });
-    }
-  }
-}
-
-module.exports = TaskDub;
--- a/lib/tasks/enqueue.js
+++ b/lib/tasks/enqueue.js
@@ -338,7 +338,6 @@ class TaskEnqueue extends Task {
      this.logger.error({err}, `TaskEnqueue:_playHook error retrieving list info for queue ${this.queueName}`);
    }
    const json = await cs.application.requestor.request('verb:hook', hook, params, httpHeaders);
-    this.logger.debug({json}, 'TaskEnqueue:_playHook: received response from waitHook');
    const tasks = normalizeJambones(this.logger, json).map((tdata) => makeTask(this.logger, tdata));

    const allowedTasks = tasks.filter((t) => allowed.includes(t.name));
--- a/lib/tasks/gather.js
+++ b/lib/tasks/gather.js
@@ -27,7 +27,7 @@ class TaskGather extends SttTask {
    [
      'finishOnKey', 'input', 'numDigits', 'minDigits', 'maxDigits',
      'interDigitTimeout', 'partialResultHook', 'bargein', 'dtmfBargein',
-      'speechTimeout', 'timeout', 'say', 'play', 'actionHookDelayAction', 'fillerNoise'
+      'speechTimeout', 'timeout', 'say', 'play', 'actionHookDelayAction'
    ].forEach((k) => this[k] = this.data[k]);

    // gather default input is digits
@@ -91,18 +91,6 @@ class TaskGather extends SttTask {
      (this.playTask && this.playTask.earlyMedia);
  }

-  get hasFillerNoise() {
-    return Object.keys(this.fillerNoise).length > 0 && this.fillerNoise.enabled !== false;
-  }
-
-  get fillerNoiseUrl() {
-    return this.fillerNoise.url;
-  }
-
-  get fillerNoiseStartDelaySecs() {
-    return this.fillerNoise.startDelaySecs;
-  }
-
  get summary() {
    let s = `${this.name}{`;
    if (this.input.length === 2) s += 'inputs=[speech,digits],';
@@ -119,15 +107,10 @@ class TaskGather extends SttTask {
  }

  async exec(cs, {ep}) {
-    this.logger.debug({options: this.data}, 'Gather:exec');
+    this.logger.debug({options: this.data}, `Gather:exec ${this.stackNum}`);
    await super.exec(cs, {ep});
    const {updateSpeechCredentialLastUsed} = require('../utils/db-utils')(this.logger, cs.srf);

-    this.fillerNoise = {
-      ...(cs.fillerNoise || {}),
-      ...(this.fillerNoise || {})
-    };
-
    if (cs.hasGlobalSttHints && !this.maskGlobalSttHints) {
      const {hints, hintsBoost} = cs.globalSttHints;
      const setOfHints = new Set((this.data.recognizer.hints || [])
@@ -188,10 +171,16 @@ class TaskGather extends SttTask {
            this.logger.info('Gather:exec - task was quickly killed so do not transcribe');
            return;
          }
+          this.logger.debug('Gather:exec - going to start transcribing (startListening)');
          this._startTranscribing(ep);
          return updateSpeechCredentialLastUsed(this.sttCredentials.speech_credential_sid);
        } catch (e) {
-          await this._startFallback(cs, ep, {error: e});
+          if (this.fallbackVendor && this.isHandledByPrimaryProvider) {
+            await this._fallback();
+            startListening(cs, ep);
+          } else {
+            this.logger.error({error: e}, 'error in initSpeech');
+          }
        }
      }
    };
@@ -199,7 +188,12 @@ class TaskGather extends SttTask {
    try {
      if (this.sayTask) {
        const {span, ctx} = this.startChildSpan(`nested:${this.sayTask.summary}`);
-        const process = () => {
+        this.sayTask.span = span;
+        this.sayTask.ctx = ctx;
+        this.sayTask.exec(cs, {ep});  // kicked off, _not_ waiting for it to complete
+        this.sayTask.on('playDone', (err) => {
+          span.end();
+          if (err) this.logger.error({err}, 'Gather:exec Error playing tts');
          this.logger.debug('Gather: nested say task completed');
          if (!this.killed) {
            startListening(cs, ep);
@@ -210,22 +204,16 @@ class TaskGather extends SttTask {
              });
            }
          }
-        };
-        this.sayTask.span = span;
-        this.sayTask.ctx = ctx;
-        this.sayTask.exec(cs, {ep})  // kicked off, _not_ waiting for it to complete
-          .catch((err) => {
-            process();
-          });
-        this.sayTask.on('playDone', (err) => {
-          span.end();
-          if (err) this.logger.error({err}, 'Gather:exec Error playing tts');
-          process();
        });
      }
      else if (this.playTask) {
        const {span, ctx} = this.startChildSpan(`nested:${this.playTask.summary}`);
-        const process = () => {
+        this.playTask.span = span;
+        this.playTask.ctx = ctx;
+        this.playTask.exec(cs, {ep});  // kicked off, _not_ waiting for it to complete
+        this.playTask.on('playDone', (err) => {
+          span.end();
+          if (err) this.logger.error({err}, 'Gather:exec Error playing url');
          this.logger.debug('Gather: nested play task completed');
          if (!this.killed) {
            startListening(cs, ep);
@@ -236,17 +224,6 @@ class TaskGather extends SttTask {
              });
            }
          }
-        };
-        this.playTask.span = span;
-        this.playTask.ctx = ctx;
-        this.playTask.exec(cs, {ep})  // kicked off, _not_ waiting for it to complete
-          .catch((err) => {
-            process();
-          });
-        this.playTask.on('playDone', (err) => {
-          span.end();
-          if (err) this.logger.error({err}, 'Gather:exec Error playing url');
-          process();
        });
      }
      else {
@@ -259,9 +236,15 @@ class TaskGather extends SttTask {

      if (this.input.includes('speech') && this.listenDuringPrompt) {
        await this._setSpeechHandlers(cs, ep);
-        this._startTranscribing(ep);
-        updateSpeechCredentialLastUsed(this.sttCredentials.speech_credential_sid)
-          .catch(() => {/*already logged error */});
+        if (!this.resolved && !this.killed) {
+          this.logger.debug(`Gather:exec ${this.stackNum} - going to start transcribing (listenDuringPrompt)`);
+          this._startTranscribing(ep);
+          updateSpeechCredentialLastUsed(this.sttCredentials.speech_credential_sid)
+            .catch(() => {/*already logged error */});
+        }
+        else {
+          this.logger.info(`Gather:exec ${this.stackNum} - task was killed or resolved before starting transcription`);
+        }
      }

      if (this.input.includes('digits') || this.dtmfBargein || this.asrDtmfTerminationDigit) {
@@ -279,7 +262,6 @@ class TaskGather extends SttTask {
    super.kill(cs);
    this._killAudio(cs);
    this._killActionHookDelayAction();
-    this._clearFillerNoiseTimer();
    this.ep.removeAllListeners('dtmf');
    clearTimeout(this.interDigitTimer);
    this._clearAsrTimer();
@@ -507,7 +489,7 @@ class TaskGather extends SttTask {
      locale: this.language,
      interim: this.interim,
      bugname: this.bugname
-    }, 'Gather:_startTranscribing');
+    }, `Gather:_startTranscribing ${this.stackNum}`);

    /**
     * Note: we don't need to ask deepgram for interim results, because they
@@ -591,6 +573,7 @@ class TaskGather extends SttTask {
  }

  _killActionHookDelayAction() {
+    this.logger.debug('_killActionHookDelayAction');
    if (this._actionHookDelaySayTask && !this._actionHookDelaySayTask.killed) {
      this._actionHookDelaySayTask.removeAllListeners('playDone');
      this._actionHookDelaySayTask.kill(this.cs);
@@ -698,29 +681,9 @@ class TaskGather extends SttTask {
    this._finalAsrTimer = null;
  }

-  _startFillerNoiseTimer() {
-    this._clearFillerNoiseTimer();
-    this._fillerNoiseTimer = setTimeout(() => {
-      this.logger.debug('Gather:_startFillerNoiseTimer - playing filler noise');
-      this.ep?.play(this.fillerNoise.url);
-    }, this.fillerNoise.startDelaySecs * 1000);
-  }
-
-  _clearFillerNoiseTimer() {
-    if (this._fillerNoiseTimer) clearTimeout(this._fillerNoiseTimer);
-    this._fillerNoiseTimer = null;
-  }
-
-  _killFillerNoise() {
-    if (this._fillerNoiseTimer) {
-      this.logger.debug('Gather:_killFillerNoise');
-      this.ep?.api('uuid_break', this.ep.uuid);
-    }
-  }
-
  _killAudio(cs) {
-    if (this.hasFillerNoise || (!this.sayTask && !this.playTask && this.bargein)) {
-      if (this.ep?.connected && (!this.playComplete || this.hasFillerNoise)) {
+    if (!this.sayTask && !this.playTask && this.bargein) {
+      if (this.ep?.connected && !this.playComplete) {
        this.logger.debug('Gather:_killAudio: killing playback of any audio');
        this.playComplete = true;
        this.ep.api('uuid_break', this.ep.uuid)
@@ -744,9 +707,13 @@ class TaskGather extends SttTask {
    // make sure this is not a transcript from answering machine detection
    const bugname = fsEvent.getHeader('media-bugname');
    const finished = fsEvent.getHeader('transcription-session-finished');
-    this.logger.debug({evt, bugname, finished, vendor: this.vendor}, 'Gather:_onTranscription raw transcript');
+    this.logger.debug({
+      evt,
+      bugname,
+      finished,
+      vendor: this.vendor
+    }, `Gather:_onTranscription ${this.stackNum} raw transcript`);
    if (bugname && this.bugname !== bugname) return;
-    if (finished === 'true') return;

    if (this.vendor === 'ibm' && evt?.state === 'listening') return;
    if (this.vendor === 'deepgram' && evt.type === 'UtteranceEnd') {
@@ -838,14 +805,21 @@ class TaskGather extends SttTask {
        this._startAsrTimer();

        /* some STT engines will keep listening after a final response, so no need to restart */
-        if (!['soniox', 'aws', 'microsoft', 'deepgram'].includes(this.vendor)) this._startTranscribing(ep);
+        if (!['soniox', 'aws', 'microsoft', 'deepgram'].includes(this.vendor)) {
+          this.logger.debug('Gather:_onTranscription - going to start transcribing again (continuous asr)');
+          this._startTranscribing(ep);
+        }
      }
      else {
        if (this.bargein && (words + bufferedWords) < this.minBargeinWordCount) {
          this.logger.debug({evt, words, bufferedWords},
            'TaskGather:_onTranscription - final transcript but < min barge words');
-          if (!emptyTranscript) this._bufferedTranscripts.push(evt);
-          if (!['soniox', 'aws', 'microsoft', 'deepgram'].includes(this.vendor)) this._startTranscribing(ep);
+          this._bufferedTranscripts.push(evt);
+          if (!['soniox', 'aws', 'microsoft', 'deepgram'].includes(this.vendor)) {
+            this.logger.debug(
+              `Gather:_onTranscription - start transcribing again (min bargein words=${this.minBargeinWordCount}`);
+            this._startTranscribing(ep);
+          }
          return;
        }
        else {
@@ -908,13 +882,10 @@ class TaskGather extends SttTask {
          this._sonioxTranscripts.push(evt.vendor.finalWords);
        }
      }
-
-      /* restart asr timer if we get a partial transcript */
-      if (this.isContinuousAsr) this._startAsrTimer();
    }
  }
  _onEndOfUtterance(cs, ep) {
-    this.logger.debug('TaskGather:_onEndOfUtterance');
+    this.logger.debug(`TaskGather:_onEndOfUtterance ${this.stackNum}`);
    if (this.bargein && this.minBargeinWordCount === 0) {
      this._killAudio(cs);
    }
@@ -929,6 +900,7 @@ class TaskGather extends SttTask {
     * since we dont have a final transcript yet.
     */
    if (!this.resolved && !this.killed && !this._bufferedTranscripts.length && this.wantsSingleUtterance) {
+      this.logger.debug('Gather:_onEndOfUtterance - start transcribing again (end of utterance/wantsSingleUtterance)');
      this._startTranscribing(ep);
    }
  }
@@ -942,9 +914,9 @@ class TaskGather extends SttTask {
  _onTranscriptionComplete(cs, ep) {
    this.logger.debug('TaskGather:_onTranscriptionComplete');
  }
-
-  async _startFallback(cs, ep, evt) {
-    if (this.canFallback) {
+  async _onJambonzError(cs, ep, evt) {
+    this.logger.info({evt}, 'TaskGather:_onJambonzError');
+    if (this.isHandledByPrimaryProvider && this.fallbackVendor) {
      ep.stopTranscription({
        vendor: this.vendor,
        bugname: this.bugname
@@ -952,35 +924,18 @@ class TaskGather extends SttTask {
        .catch((err) => this.logger.error({err}, `Error stopping transcription for primary vendor ${this.vendor}`));
      const {updateSpeechCredentialLastUsed} = require('../utils/db-utils')(this.logger, cs.srf);
      try {
-        this.logger.debug('gather:_startFallback');
-        this.notifyError({ msg: 'ASR error',
-          details:`STT Vendor ${this.vendor} error: ${evt.error || evt.reason}`, failover: 'in progress'});
-        await this._initFallback();
-        this._speechHandlersSet = false;
-        await this._setSpeechHandlers(cs, ep);
+        await this._fallback();
+        await this._initSpeech(cs, ep);
+        this.logger.debug('Gather:_onJambonzError - going to start transcribing again (jambonz error)');
        this._startTranscribing(ep);
        updateSpeechCredentialLastUsed(this.sttCredentials.speech_credential_sid);
-        return true;
+        return;
      } catch (error) {
        this.logger.info({error}, `There is error while falling back to ${this.fallbackVendor}`);
-        this.notifyError({ msg: 'ASR error',
-          details:`STT Vendor ${this.vendor} error: ${evt.error || evt.reason}`, failover: 'not available'});
      }
-    } else {
-      this.logger.debug('gather:_startFallback no condition for falling back');
-      this.notifyError({ msg: 'ASR error',
-        details:`STT Vendor ${this.vendor} error: ${evt.error || evt.reason}`, failover: 'not available'});
    }
-    return false;
-  }
-
-  async _onJambonzError(cs, ep, evt) {
-    if (this.vendor === 'google' && evt.error_code === 0) {
-      this.logger.info({evt}, 'TaskTranscribe:_onJambonzError - ignoring google error code 0');
-      return;
-    }
-    this.logger.info({evt}, 'TaskGather:_onJambonzError');
    const {writeAlerts, AlertType} = cs.srf.locals;
+
    if (this.vendor === 'nuance') {
      const {code, error} = evt;
      if (code === 404 && error === 'No speech') return this._resolve('timeout');
@@ -993,23 +948,17 @@ class TaskGather extends SttTask {
      message: `Custom speech vendor ${this.vendor} error: ${evt.error}`,
      vendor: this.vendor,
    }).catch((err) => this.logger.info({err}, 'Error generating alert for jambonz custom connection failure'));
-    if (!(await this._startFallback(cs, ep, evt))) {
-      this.notifyTaskDone();
-    }
+    this.notifyError({msg: 'ASR error', details:`Custom speech vendor ${this.vendor} error: ${evt.error}`});
  }

-  async _onVendorConnectFailure(cs, _ep, evt) {
+  _onVendorConnectFailure(cs, _ep, evt) {
    super._onVendorConnectFailure(cs, _ep, evt);
-    if (!(await this._startFallback(cs, _ep, evt))) {
-      this.notifyTaskDone();
-    }
+    this.notifyTaskDone();
  }

-  async _onVendorError(cs, _ep, evt) {
+  _onVendorError(cs, _ep, evt) {
    super._onVendorError(cs, _ep, evt);
-    if (!(await this._startFallback(cs, _ep, evt))) {
-      this._resolve('stt-error', evt);
-    }
+    this._resolve('stt-error', evt);
  }

  _onVadDetected(cs, ep) {
@@ -1027,7 +976,7 @@ class TaskGather extends SttTask {
        this.logger.debug('TaskGather:_onNoSpeechDetected for old gather, ignoring');
      }
      else {
-        this.logger.debug('TaskGather:_onNoSpeechDetected - listen again');
+        this.logger.debug('Gather:_onNoSpeechDetected - going to start transcribing again');
        this._startTranscribing(ep);
      }
      return;
@@ -1035,7 +984,7 @@ class TaskGather extends SttTask {
  }

  async _resolve(reason, evt) {
-    this.logger.debug(`TaskGather:resolve with reason ${reason}`);
+    this.logger.debug(`TaskGather:resolve ${this.stackNum} with reason ${reason}`);
    if (this.needsStt && this.ep && this.ep.connected) {
      this.ep.stopTranscription({
        vendor: this.vendor,
@@ -1079,16 +1028,6 @@ class TaskGather extends SttTask {
      this._startActionHookNoResponseGiveUpTimer();
    }

-    if (this.hasFillerNoise && (reason.startsWith('dtmf') || reason.startsWith('speech'))) {
-      if (this.fillerNoiseStartDelaySecs > 0) {
-        this._startFillerNoiseTimer();
-      }
-      else {
-        this.logger.debug(`TaskGather:_resolve - playing filler noise: ${this.fillerNoiseUrl}`);
-        this.ep.play(this.fillerNoiseUrl);
-      }
-    }
-
    try {
      if (reason.startsWith('dtmf')) {
        if (this.parentTask) this.parentTask.emit('dtmf', evt);
@@ -1123,7 +1062,6 @@ class TaskGather extends SttTask {
    // Gather got response from hook, cancel all delay timers if there is any
    this._clearActionHookNoResponseTimer();
    this._clearActionHookNoResponseGiveUpTimer();
-    this._clearFillerNoiseTimer();

    this.notifyTaskDone();
  }
--- a/lib/tasks/listen.js
+++ b/lib/tasks/listen.js
@@ -8,10 +8,6 @@ const DTMF_SPAN_NAME = 'dtmf';
 class TaskListen extends Task {
  constructor(logger, opts, parentTask) {
    super(logger, opts);
-    /**
-     * @deprecated
-     * use bidirectionalAudio.enabled
-     */
    this.disableBidirectionalAudio = opts.disableBidirectionalAudio;
    this.preconditions = TaskPreconditions.Endpoint;

@@ -29,15 +25,6 @@ class TaskListen extends Task {
    this.results = {};
    this.playAudioQueue = [];
    this.isPlayingAudioFromQueue = false;
-    this.bidirectionalAudio = {
-      enabled: this.disableBidirectionalAudio === true ? false : true,
-      ...(this.data['bidirectionalAudio']),
-    };
-
-    // From drachtio-version 3.0.40, forkAudioStart will send empty bugname, metadata together with
-    // bidirectionalAudio params that cause old version of freeswitch missunderstand between bugname and
-    // bidirectionalAudio params
-    this._bugname = 'audio_fork';

    if (this.transcribe) this.transcribeTask = makeTask(logger, {'transcribe': opts.transcribe}, this);
  }
@@ -146,8 +133,7 @@ class TaskListen extends Task {
      mixType: this.mixType,
      sampling: this.sampleRate,
      ...(this._bugname && {bugname: this._bugname}),
-      metadata,
-      bidirectionalAudio: this.bidirectionalAudio || {}
+      metadata
    });
    this.recordStartTime = moment();
    if (this.maxLength) {
@@ -167,7 +153,7 @@ class TaskListen extends Task {
    }

    /* support bi-directional audio */
-    if (this.bidirectionalAudio.enabled) {
+    if (!this.disableBidirectionalAudio) {
      ep.addCustomEventListener(ListenEvents.PlayAudio, this._onPlayAudio.bind(this, ep));
    }
    ep.addCustomEventListener(ListenEvents.KillAudio, this._onKillAudio.bind(this, ep));
--- a/lib/tasks/make_task.js
+++ b/lib/tasks/make_task.js
@@ -14,9 +14,6 @@ function makeTask(logger, obj, parent) {
  }
  validateVerb(name, data, logger);
  switch (name) {
-    case TaskName.Answer:
-      const TaskAnswer = require('./answer');
-      return new TaskAnswer(logger, data, parent);
    case TaskName.SipDecline:
      const TaskSipDecline = require('./sip_decline');
      return new TaskSipDecline(logger, data, parent);
@@ -44,9 +41,6 @@ function makeTask(logger, obj, parent) {
    case TaskName.Dtmf:
      const TaskDtmf = require('./dtmf');
      return new TaskDtmf(logger, data, parent);
-    case TaskName.Dub:
-      const TaskDub = require('./dub');
-      return new TaskDub(logger, data, parent);
    case TaskName.Enqueue:
      const TaskEnqueue = require('./enqueue');
      return new TaskEnqueue(logger, data, parent);
--- a/lib/tasks/say.js
+++ b/lib/tasks/say.js
@@ -1,4 +1,4 @@
-const TtsTask = require('./tts-task');
+const Task = require('./task');
 const {TaskName, TaskPreconditions} = require('../utils/constants');
 const pollySSMLSplit = require('polly-ssml-split');

@@ -29,9 +29,9 @@ const parseTextFromSayString = (text) => {
  return text.slice(closingBraceIndex + 1);
 };

-class TaskSay extends TtsTask {
+class TaskSay extends Task {
  constructor(logger, opts, parentTask) {
-    super(logger, opts, parentTask);
+    super(logger, opts);
    this.preconditions = TaskPreconditions.Endpoint;

    this.text = (Array.isArray(this.data.text) ? this.data.text : [this.data.text])
@@ -39,6 +39,10 @@ class TaskSay extends TtsTask {
      .flat();

    this.loop = this.data.loop || 1;
+    this.earlyMedia = this.data.earlyMedia === true || (parentTask && parentTask.earlyMedia);
+    this.synthesizer = this.data.synthesizer || {};
+    this.disableTtsCache = this.data.disableTtsCache;
+    this.options = this.synthesizer.options || {};
    this.isHandledByPrimaryProvider = true;
  }

@@ -102,11 +106,8 @@ class TaskSay extends TtsTask {
    ep.set({
      tts_engine: vendor,
      tts_voice: voice,
-      cache_speech_handles: !cs.currentTtsVendor || cs.currentTtsVendor === vendor ? 1 : 0,
+      cache_speech_handles: 1,
    }).catch((err) => this.logger.info({err}, 'Error setting tts_engine on endpoint'));
-    // set the current vendor on the call session
-    // If vendor is changed from the previous one, then reset the cache_speech_handles flag
-    cs.currentTtsVendor = vendor;

    if (!preCache) this.logger.info({vendor, language, voice, model}, 'TaskSay:exec');
    try {
@@ -116,6 +117,10 @@ class TaskSay extends TtsTask {
          alert_type: AlertType.TTS_NOT_PROVISIONED,
          vendor
        }).catch((err) => this.logger.info({err}, 'Error generating alert for no tts'));
+        this.notifyError({
+          msg: 'TTS error',
+          details:`No speech credentials provisioned for selected vendor ${vendor}`
+        });
        throw new Error('no provisioned speech credentials for TTS');
      }
      // synthesize all of the text elements
@@ -187,6 +192,7 @@ class TaskSay extends TtsTask {
            vendor,
            detail: err.message
          }).catch((err) => this.logger.info({err}, 'Error generating alert for tts failure'));
+          this.notifyError({msg: 'TTS error', details: err.message || err});
          throw err;
        }
      };
@@ -209,16 +215,16 @@ class TaskSay extends TtsTask {
    await super.exec(cs);
    this.ep = ep;

-    let vendor = this.synthesizer.vendor && this.synthesizer.vendor !== 'default' ?
+    const vendor = this.synthesizer.vendor && this.synthesizer.vendor !== 'default' ?
      this.synthesizer.vendor :
      cs.speechSynthesisVendor;
-    let language = this.synthesizer.language && this.synthesizer.language !== 'default' ?
+    const language = this.synthesizer.language && this.synthesizer.language !== 'default' ?
      this.synthesizer.language :
      cs.speechSynthesisLanguage ;
-    let voice =  this.synthesizer.voice && this.synthesizer.voice !== 'default' ?
+    const voice =  this.synthesizer.voice && this.synthesizer.voice !== 'default' ?
      this.synthesizer.voice :
      cs.speechSynthesisVoice;
-    let label = this.synthesizer.label && this.synthesizer.label !== 'default' ?
+    const label = this.synthesizer.label && this.synthesizer.label !== 'default' ?
      this.synthesizer.label :
      cs.speechSynthesisLabel;

@@ -235,19 +241,12 @@ class TaskSay extends TtsTask {
      this.synthesizer.fallbackLabel :
      cs.fallbackSpeechSynthesisLabel;

-    if (cs.hasFallbackTts) {
-      vendor = fallbackVendor;
-      language = fallbackLanguage;
-      voice = fallbackVoice;
-      label = fallbackLabel;
-    }
-
-    const startFallback = async(error) => {
-      if (fallbackVendor && this.isHandledByPrimaryProvider && !cs.hasFallbackTts) {
-        this.notifyError(
-          { msg: 'TTS error', details:`TTS vendor ${vendor} error: ${error}`, failover: 'in progress'});
+    let filepath;
+    try {
+      filepath = await this._synthesizeWithSpecificVendor(cs, ep, {vendor, language, voice, label});
+    } catch (error) {
+      if (fallbackVendor && this.isHandledByPrimaryProvider) {
        this.isHandledByPrimaryProvider = false;
-        cs.hasFallbackTts = true;
        this.logger.info(`Synthesize error, fallback to ${fallbackVendor}`);
        filepath = await this._synthesizeWithSpecificVendor(cs, ep,
          {
@@ -257,16 +256,8 @@ class TaskSay extends TtsTask {
            label: fallbackLabel
          });
      } else {
-        this.notifyError(
-          { msg: 'TTS error', details:`TTS vendor ${vendor} error: ${error}`, failover: 'not available'});
        throw error;
      }
-    };
-    let filepath;
-    try {
-      filepath = await this._synthesizeWithSpecificVendor(cs, ep, {vendor, language, voice, label});
-    } catch (error) {
-      await startFallback(error);
    }
    this.notifyStatus({event: 'start-playback'});

@@ -313,31 +304,8 @@ class TaskSay extends TtsTask {
                text
              }).catch((err) => this.logger.info({err}, 'Error adding file to cache'));
            }
-            if (this._playResolve) {
-              evt.variable_tts_error ? this._playReject(new Error(evt.variable_tts_error)) : this._playResolve();
-            }
-          });
-          // wait for playback-stop event received to confirm if the playback is successful
-          this._playPromise = new Promise((resolve, reject) => {
-            this._playResolve = resolve;
-            this._playReject = reject;
          });
          await ep.play(filepath[segment]);
-          try {
-            // wait for playback-stop event received to confirm if the playback is successful
-            await this._playPromise;
-          } catch (err) {
-            try {
-              await startFallback(err);
-            } catch (err) {
-              this.logger.info({err}, 'Error waiting for playback-stop event');
-            }
-            continue;
-          } finally {
-            this._playPromise = null;
-            this._playResolve = null;
-            this._playReject = null;
-          }
          if (filepath[segment].startsWith('say:{')) {
            const arr = /^say:\{.*\}\s*(.*)$/.exec(filepath[segment]);
            if (arr) this.logger.debug(`Say:exec complete playing streaming tts request: ${arr[1].substring(0, 64)}..`);
@@ -373,9 +341,6 @@ class TaskSay extends TtsTask {
      if (key.startsWith('variable_tts_')) {
        let newKey = key.substring('variable_tts_'.length)
          .replace('whisper_', 'whisper.')
-          .replace('deepgram_', 'deepgram.')
-          .replace('playht_', 'playht.')
-          .replace('rimelabs_', 'rimelabs.')
          .replace('elevenlabs_', 'elevenlabs.');
        if (spanMapping[newKey]) newKey = spanMapping[newKey];
        attrs[newKey] = value;
@@ -387,9 +352,6 @@ class TaskSay extends TtsTask {
 }

 const spanMapping = {
-  // IMPORTANT!!! JAMBONZ WEBAPP WILL SHOW TEXT PERFECTLY IF THE SPAN NAME IS SMALLER OR EQUAL 25 CHARACTERS.
-  // EX: whisper.ratelim_reqs has length 20 <= 25 which is perfect
-  // Elevenlabs
  'elevenlabs.reported_latency_ms': 'elevenlabs.latency_ms',
  'elevenlabs.request_id': 'elevenlabs.req_id',
  'elevenlabs.history_item_id': 'elevenlabs.item_id',
@@ -397,33 +359,11 @@ const spanMapping = {
  'elevenlabs.name_lookup_time_ms': 'name_lookup_ms',
  'elevenlabs.connect_time_ms': 'connect_ms',
  'elevenlabs.final_response_time_ms': 'final_response_ms',
-  // Whisper
  'whisper.reported_latency_ms': 'whisper.latency_ms',
  'whisper.request_id': 'whisper.req_id',
-  'whisper.reported_organization': 'whisper.organization',
-  'whisper.reported_ratelimit_requests': 'whisper.ratelimit',
-  'whisper.reported_ratelimit_remaining_requests': 'whisper.ratelimit_remain',
-  'whisper.reported_ratelimit_reset_requests': 'whisper.ratelimit_reset',
  'whisper.name_lookup_time_ms': 'name_lookup_ms',
  'whisper.connect_time_ms': 'connect_ms',
  'whisper.final_response_time_ms': 'final_response_ms',
-  // Deepgram
-  'deepgram.request_id': 'deepgram.req_id',
-  'deepgram.reported_model_name': 'deepgram.model_name',
-  'deepgram.reported_model_uuid': 'deepgram.model_uuid',
-  'deepgram.reported_char_count': 'deepgram.char_count',
-  'deepgram.name_lookup_time_ms': 'name_lookup_ms',
-  'deepgram.connect_time_ms': 'connect_ms',
-  'deepgram.final_response_time_ms': 'final_response_ms',
-  // Playht
-  'playht.request_id': 'playht.req_id',
-  'playht.name_lookup_time_ms': 'name_lookup_ms',
-  'playht.connect_time_ms': 'connect_ms',
-  'playht.final_response_time_ms': 'final_response_ms',
-  // Rimelabs
-  'rimelabs.name_lookup_time_ms': 'name_lookup_ms',
-  'rimelabs.connect_time_ms': 'connect_ms',
-  'rimelabs.final_response_time_ms': 'final_response_ms',
 };

 module.exports = TaskSay;
--- a/lib/tasks/stt-task.js
+++ b/lib/tasks/stt-task.js
@@ -56,20 +56,24 @@ class SttTask extends Task {
    super.exec(cs);
    this.ep = ep;
    this.ep2 = ep2;
-
-    // use session preferences if we don't have specific verb-level settings.
+    // copy all value from config verb to this object.
    if (cs.recognizer) {
      for (const k in cs.recognizer) {
-        const newValue = this.data.recognizer && this.data.recognizer[k] !== undefined ?
-          this.data.recognizer[k] :
-          cs.recognizer[k];
-
-        if (Array.isArray(newValue)) {
-          this.data.recognizer[k] = [...(this.data.recognizer[k] || []), ...cs.recognizer[k]];
-        } else if (typeof newValue === 'object' && newValue !== null) {
-          this.data.recognizer[k] = { ...(this.data.recognizer[k] || {}), ...cs.recognizer[k] };
+        if (Array.isArray(this.data.recognizer[k]) ||
+        Array.isArray(cs.recognizer[k])) {
+          this.data.recognizer[k] = [
+            ...this.data.recognizer[k],
+            ...cs.recognizer[k]
+          ];
+        } else if (typeof this.data.recognizer[k] === 'object' ||
+        typeof cs.recognizer[k] === 'object'
+        ) {
+          this.data.recognizer[k] = {
+            ...this.data.recognizer[k],
+            ...cs.recognizer[k]
+          };
        } else {
-          this.data.recognizer[k] = newValue;
+          this.data.recognizer[k] = cs.recognizer[k] || this.data.recognizer[k];
        }
      }
    }
@@ -98,13 +102,6 @@ class SttTask extends Task {
      this.fallbackLabel = cs.fallbackSpeechRecognizerLabel;
      if (this.data.recognizer) this.data.recognizer.fallbackLabel = this.fallbackLabel;
    }
-    // If call is already fallback to 2nd ASR vendor
-    // use that.
-    if (cs.hasFallbackAsr) {
-      this.vendor = this.fallbackVendor;
-      this.language = this.fallbackLanguage;
-      this.label = this.fallbackLabel;
-    }
    if (!this.data.recognizer.vendor) {
      this.data.recognizer.vendor = this.vendor;
    }
@@ -122,19 +119,9 @@ class SttTask extends Task {
      try {
        this.sttCredentials = await this._initSpeechCredentials(this.cs, this.vendor, this.label);
      } catch (error) {
-        if (this.canFallback) {
-          this.notifyError(
-            {
-              msg: 'ASR error', details:`Invalid vendor ${this.vendor}, Error: ${error}`,
-              failover: 'in progress'
-            });
-          await this._initFallback();
+        if (this.fallbackVendor && this.isHandledByPrimaryProvider) {
+          await this._fallback();
        } else {
-          this.notifyError(
-            {
-              msg: 'ASR error', details:`Invalid vendor ${this.vendor}, Error: ${error}`,
-              failover: 'not available'
-            });
          throw error;
        }
      }
@@ -166,7 +153,7 @@ class SttTask extends Task {
  }

  async _initSpeechCredentials(cs, vendor, label) {
-    const {getNuanceAccessToken, getIbmAccessToken, getAwsAuthToken} = cs.srf.locals.dbHelpers;
+    const {getNuanceAccessToken, getIbmAccessToken} = cs.srf.locals.dbHelpers;
    let credentials = cs.getSpeechCredentials(vendor, 'stt', label);

    if (!credentials) {
@@ -177,6 +164,11 @@ class SttTask extends Task {
        alert_type: AlertType.STT_NOT_PROVISIONED,
        vendor
      }).catch((err) => this.logger.info({err}, 'Error generating alert for no stt'));
+      // Notify application that STT vender is wrong.
+      this.notifyError({
+        msg: 'ASR error',
+        details: `No speech-to-text service credentials for ${vendor} have been configured`
+      });
      this.notifyTaskDone();
      throw new Error(`No speech-to-text service credentials for ${vendor} have been configured`);
    }
@@ -194,24 +186,13 @@ class SttTask extends Task {
      const {access_token, servedFromCache} = await getIbmAccessToken(stt_api_key);
      this.logger.debug({stt_api_key}, `got ibm access token ${servedFromCache ? 'from cache' : ''}`);
      credentials = {...credentials, access_token, stt_region};
-    } else if (['aws', 'polly'].includes(vendor) && credentials.roleArn) {
-      /* get aws access token */
-      const {roleArn} = credentials;
-      const {accessKeyId, secretAccessKey, sessionToken, servedFromCache} = await getAwsAuthToken(roleArn);
-      this.logger.debug({roleArn}, `got aws access token ${servedFromCache ? 'from cache' : ''}`);
-      credentials = {...credentials, accessKeyId, secretAccessKey, sessionToken};
    }
    return credentials;
  }

-  get canFallback() {
-    return this.fallbackVendor && this.isHandledByPrimaryProvider && !this.cs.hasFallbackAsr;
-  }
-
-  async _initFallback() {
+  async _fallback() {
    assert(this.fallbackVendor, 'fallback failed without fallbackVendor configuration');
    this.isHandledByPrimaryProvider = false;
-    this.cs.hasFallbackAsr = true;
    this.logger.info(`Failed to use primary STT provider, fallback to ${this.fallbackVendor}`);
    this.vendor = this.fallbackVendor;
    this.language = this.fallbackLanguage;
@@ -220,8 +201,6 @@ class SttTask extends Task {
    this.data.recognizer.language = this.language;
    this.data.recognizer.label = this.label;
    this.sttCredentials = await this._initSpeechCredentials(this.cs, this.vendor, this.label);
-    // cleanup previous listener from previous vendor
-    this.removeCustomEventListeners();
  }

  async compileHintsForCobalt(ep, hostport, model, token, hints) {
@@ -265,20 +244,6 @@ class SttTask extends Task {
  _doContinuousAsrWithDeepgram(asrTimeout) {
    /* deepgram has an utterance_end_ms property that simplifies things */
    assert(this.vendor === 'deepgram');
-    if (asrTimeout < 1000) {
-      this.notifyError({
-        msg: 'ASR error',
-        details:`asrTimeout ${asrTimeout} is too short for deepgram; setting it to 1000ms`
-      });
-      asrTimeout = 1000;
-    }
-    else if (asrTimeout > 5000) {
-      this.notifyError({
-        msg: 'ASR error',
-        details:`asrTimeout ${asrTimeout} is too long for deepgram; setting it to 5000ms`
-      });
-      asrTimeout = 5000;
-    }
    this.logger.debug(`_doContinuousAsrWithDeepgram - setting utterance_end_ms to ${asrTimeout}`);
    const dgOptions = this.data.recognizer.deepgramOptions = this.data.recognizer.deepgramOptions || {};
    dgOptions.utteranceEndMs = dgOptions.utteranceEndMs || asrTimeout;
@@ -298,6 +263,7 @@ class SttTask extends Task {
      detail: evt.error,
      vendor: this.vendor,
    }).catch((err) => this.logger.info({err}, `Error generating alert for ${this.vendor} connection failure`));
+    this.notifyError({msg: 'ASR error', details:`Failed connecting to speech vendor ${this.vendor}: ${evt.error}`});
  }

  _onVendorConnectFailure(cs, _ep, evt) {
@@ -310,6 +276,7 @@ class SttTask extends Task {
      message: `Failed connecting to ${this.vendor} speech recognizer: ${reason}`,
      vendor: this.vendor,
    }).catch((err) => this.logger.info({err}, `Error generating alert for ${this.vendor} connection failure`));
+    this.notifyError({msg: 'ASR error', details:`Failed connecting to speech vendor ${this.vendor}: ${reason}`});
  }
 }

--- a/lib/tasks/transcribe.js
+++ b/lib/tasks/transcribe.js
@@ -32,22 +32,8 @@ class TaskTranscribe extends SttTask {
    }

    /* for nested transcribe in dial, unless the app explicitly says so we want to transcribe both legs */
-    if (this.parentTask?.name === TaskName.Dial) {
-      if (this.data.channel === 1 || this.data.channel === 2) {
-        /* transcribe only the channel specified */
-        this.separateRecognitionPerChannel = false;
-        this.channel = this.data.channel;
-        logger.debug(`TaskTranscribe: transcribing only channel ${this.channel} in the Dial verb`);
-      }
-      else if (this.separateRecognitionPerChannel !== false) {
-        this.separateRecognitionPerChannel = true;
-      }
-      else {
-        this.channel = 1;
-      }
-    }
-    else {
-      this.channel = 1;
+    if (this.parentTask?.name === TaskName.Dial && this.separateRecognitionPerChannel !== false) {
+      this.separateRecognitionPerChannel = true;
    }

    this.childSpan = [null, null];
@@ -58,21 +44,13 @@ class TaskTranscribe extends SttTask {
      this.isContinuousAsr = true;
    }
    /* buffer speech for continuous asr */
-    this._bufferedTranscripts = [ [], [] ];  // for channel 1 and 2
+    this._bufferedTranscripts = [];
    this.bugname_prefix = 'transcribe_';
    this.paused = false;
  }

  get name() { return TaskName.Transcribe; }

-  get transcribing1() {
-    return this.channel === 1 || this.separateRecognitionPerChannel;
-  }
-
-  get transcribing2() {
-    return this.channel === 2 || this.separateRecognitionPerChannel && this.ep2;
-  }
-
  async exec(cs, {ep, ep2}) {
    await super.exec(cs, {ep, ep2});

@@ -95,30 +73,25 @@ class TaskTranscribe extends SttTask {
    }

    try {
-      if (this.transcribing1) {
-        await this._startTranscribing(cs, ep, 1);
-      }
-      if (this.transcribing2) {
+      await this._startTranscribing(cs, ep, 1);
+      if (this.separateRecognitionPerChannel && ep2) {
        await this._startTranscribing(cs, ep2, 2);
      }

      updateSpeechCredentialLastUsed(this.sttCredentials.speech_credential_sid)
        .catch(() => {/*already logged error */});
+
+      await this.awaitTaskDone();
    } catch (err) {
-      if (!(await this._startFallback(cs, ep, {error: err}))) {
-        this.logger.info(err, 'TaskTranscribe:exec - error');
-        this.parentTask && this.parentTask.emit('error', err);
-        this.removeCustomEventListeners();
-        return;
-      }
+      this.logger.info(err, 'TaskTranscribe:exec - error');
+      this.parentTask && this.parentTask.emit('error', err);
    }
-    await this.awaitTaskDone();
    this.removeCustomEventListeners();
  }

  async _stopTranscription() {
    let stopTranscription = false;
-    if (this.transcribing1 && this.ep?.connected) {
+    if (this.ep?.connected) {
      stopTranscription = true;
      this.ep.stopTranscription({
        vendor: this.vendor,
@@ -126,7 +99,7 @@ class TaskTranscribe extends SttTask {
      })
        .catch((err) => this.logger.info(err, 'Error TaskTranscribe:kill'));
    }
-    if (this.transcribing2 && this.ep2?.connected) {
+    if (this.separateRecognitionPerChannel && this.ep2 && this.ep2.connected) {
      stopTranscription = true;
      this.ep2.stopTranscription({vendor: this.vendor, bugname: this.bugname})
        .catch((err) => this.logger.info(err, 'Error TaskTranscribe:kill'));
@@ -155,8 +128,10 @@ class TaskTranscribe extends SttTask {
          break;
        case TranscribeStatus.Resume:
          this.paused = false;
-          if (this.transcribing1) await this._startTranscribing(this.cs, this.ep, 1);
-          if (this.transcribing2) await this._startTranscribing(this.cs, this.ep2, 2);
+          await this._startTranscribing(this.cs, this.ep, 1);
+          if (this.separateRecognitionPerChannel && this.ep2) {
+            await this._startTranscribing(this.cs, this.ep2, 2);
+          }
          break;
      }
    }
@@ -319,7 +294,7 @@ class TaskTranscribe extends SttTask {
      vendor: this.vendor,
      interim: this.interim ? true : false,
      locale: this.language,
-      channels: 1,
+      channels: /*this.separateRecognitionPerChannel ? 2 : */ 1,
      bugname: this.bugname,
      hostport: this.hostport
    });
@@ -329,7 +304,6 @@ class TaskTranscribe extends SttTask {
    // make sure this is not a transcript from answering machine detection
    const bugname = fsEvent.getHeader('media-bugname');
    const finished = fsEvent.getHeader('transcription-session-finished');
-    const bufferedTranscripts = this._bufferedTranscripts[channel - 1];
    if (bugname && this.bugname !== bugname) return;
    if (this.paused) {
      this.logger.debug({evt}, 'TaskTranscribe:_onTranscription - paused, ignoring transcript');
@@ -339,14 +313,14 @@ class TaskTranscribe extends SttTask {

    if (this.vendor === 'deepgram' && evt.type === 'UtteranceEnd') {
      /* we will only get this when we have set utterance_end_ms */
-      if (bufferedTranscripts.length === 0) {
+      if (this._bufferedTranscripts.length === 0) {
        this.logger.debug('Gather:_onTranscription - got UtteranceEnd event from deepgram but no buffered transcripts');
      }
      else {
        this.logger.debug('Gather:_onTranscription - got UtteranceEnd event from deepgram, return buffered transcript');
-        evt = this.consolidateTranscripts(bufferedTranscripts, channel, this.language, this.vendor);
+        evt = this.consolidateTranscripts(this._bufferedTranscripts, 1, this.language, this.vendor);
        evt.is_final = true;
-        this._bufferedTranscripts[channel - 1] = [];
+        this._bufferedTranscripts = [];
        this._resolve(channel, evt);
      }
      return;
@@ -363,11 +337,11 @@ class TaskTranscribe extends SttTask {

    let emptyTranscript = false;
    if (evt.is_final) {
-      if (evt.alternatives.length === 0 || evt.alternatives[0].transcript === '' && !cs.callGone && !this.killed) {
+      if (evt.alternatives[0].transcript === '' && !cs.callGone && !this.killed) {
        emptyTranscript = true;
        if (finished === 'true' &&
          ['microsoft', 'deepgram'].includes(this.vendor) &&
-          bufferedTranscripts.length === 0) {
+          this._bufferedTranscripts.length === 0) {
          this.logger.debug({evt}, 'TaskGather:_onTranscription - got empty transcript from old gather, disregarding');
          return;
        }
@@ -380,7 +354,7 @@ class TaskTranscribe extends SttTask {
            'TaskGather:_onTranscription - got empty deepgram transcript during continous asr, continue listening');
          return;
        }
-        else if (this.vendor === 'deepgram' && bufferedTranscripts.length > 0) {
+        else if (this.vendor === 'deepgram' && this._bufferedTranscripts.length > 0) {
          this.logger.info({evt},
            'TaskGather:_onTranscription - got empty transcript from deepgram, return the buffered transcripts');
        }
@@ -396,7 +370,7 @@ class TaskTranscribe extends SttTask {
          }
        }
        this.logger.info({evt}, 'TaskGather:_onTranscription - got transcript during continous asr');
-        bufferedTranscripts.push(evt);
+        this._bufferedTranscripts.push(evt);
        this._startAsrTimer(channel);

        /* some STT engines will keep listening after a final response, so no need to restart */
@@ -412,12 +386,12 @@ class TaskTranscribe extends SttTask {
        }
        else if (this.vendor === 'deepgram') {
          /* compile transcripts into one */
-          if (!emptyTranscript) bufferedTranscripts.push(evt);
+          if (!emptyTranscript) this._bufferedTranscripts.push(evt);

          /* deepgram can send an empty and final transcript; only if we have any buffered should we resolve */
-          if (bufferedTranscripts.length === 0) return;
-          evt = this.consolidateTranscripts(bufferedTranscripts, channel, this.language);
-          this._bufferedTranscripts[channel - 1] = [];
+          if (this._bufferedTranscripts.length === 0) return;
+          evt = this.consolidateTranscripts(this._bufferedTranscripts, channel, this.language);
+          this._bufferedTranscripts = [];
        }

        /* here is where we return a final transcript */
@@ -436,7 +410,7 @@ class TaskTranscribe extends SttTask {
        const originalEvent = evt.vendor.evt;
        if (originalEvent.is_final && evt.alternatives[0].transcript !== '') {
          this.logger.debug({evt}, 'Gather:_onTranscription - buffering a completed (partial) deepgram transcript');
-          bufferedTranscripts.push(evt);
+          this._bufferedTranscripts.push(evt);
        }
      }

@@ -537,8 +511,10 @@ class TaskTranscribe extends SttTask {
    }
  }

-  async _startFallback(cs, _ep, evt) {
-    if (this.canFallback) {
+  async _onJambonzError(cs, _ep, evt) {
+    this.logger.info({evt}, 'TaskTranscribe:_onJambonzError');
+    if (this.paused) return;
+    if (this.isHandledByPrimaryProvider && this.fallbackVendor) {
      _ep.stopTranscription({
        vendor: this.vendor,
        bugname: this.bugname
@@ -546,57 +522,37 @@ class TaskTranscribe extends SttTask {
        .catch((err) => this.logger.error({err}, `Error stopping transcription for primary vendor ${this.vendor}`));
      const {updateSpeechCredentialLastUsed} = require('../utils/db-utils')(this.logger, cs.srf);
      try {
-        this.notifyError({ msg: 'ASR error',
-          details:`STT Vendor ${this.vendor} error: ${evt.error || evt.reason}`, failover: 'in progress'});
-        await this._initFallback();
+        await this._fallback();
        let channel = 1;
        if (this.ep !== _ep) {
          channel = 2;
        }
-        this[`_speechHandlersSet_${channel}`] = false;
        this._startTranscribing(cs, _ep, channel);
        updateSpeechCredentialLastUsed(this.sttCredentials.speech_credential_sid);
-        return true;
+        return;
      } catch (error) {
-        this.notifyError({ msg: 'ASR error',
-          details:`STT Vendor ${this.vendor} error: ${evt.error || evt.reason}`, failover: 'not available'});
        this.logger.info({error}, `There is error while falling back to ${this.fallbackVendor}`);
      }
    } else {
-      this.logger.debug('transcribe:_startFallback no condition for falling back');
-      this.notifyError({ msg: 'ASR error',
-        details:`STT Vendor ${this.vendor} error: ${evt.error || evt.reason}`, failover: 'not available'});
-    }
-    return false;
-  }
+      const {writeAlerts, AlertType} = cs.srf.locals;

-  async _onJambonzError(cs, _ep, evt) {
-    if (this.vendor === 'google' && evt.error_code === 0) {
-      this.logger.info({evt}, 'TaskTranscribe:_onJambonzError - ignoring google error code 0');
-      return;
-    }
-    this.logger.info({evt}, 'TaskTranscribe:_onJambonzError');
-    if (this.paused) return;
-    const {writeAlerts, AlertType} = cs.srf.locals;
-
-    if (this.vendor === 'nuance') {
-      const {code, error} = evt;
-      if (code === 404 && error === 'No speech') return this._resolve('timeout');
-      if (code === 413 && error === 'Too much speech') return this._resolve('timeout');
-    }
-    this.logger.info({evt}, 'TaskTranscribe:_onJambonzError');
-    writeAlerts({
-      account_sid: cs.accountSid,
-      alert_type: AlertType.STT_FAILURE,
-      message: `Custom speech vendor ${this.vendor} error: ${evt.error}`,
-      vendor: this.vendor,
-    }).catch((err) => this.logger.info({err}, 'Error generating alert for jambonz custom connection failure'));
-    if (!(await this._startFallback(cs, _ep, evt))) {
-      this.notifyTaskDone();
+      if (this.vendor === 'nuance') {
+        const {code, error} = evt;
+        if (code === 404 && error === 'No speech') return this._resolve('timeout');
+        if (code === 413 && error === 'Too much speech') return this._resolve('timeout');
+      }
+      this.logger.info({evt}, 'TaskTranscribe:_onJambonzError');
+      writeAlerts({
+        account_sid: cs.accountSid,
+        alert_type: AlertType.STT_FAILURE,
+        message: `Custom speech vendor ${this.vendor} error: ${evt.error}`,
+        vendor: this.vendor,
+      }).catch((err) => this.logger.info({err}, 'Error generating alert for jambonz custom connection failure'));
+      this.notifyError({msg: 'ASR error', details:`Custom speech vendor ${this.vendor} error: ${evt.error}`});
    }
  }

-  async _onVendorConnectFailure(cs, _ep, channel, evt) {
+  _onVendorConnectFailure(cs, _ep, channel, evt) {
    super._onVendorConnectFailure(cs, _ep, evt);
    if (this.childSpan[channel - 1] && this.childSpan[channel - 1].span) {
      this.childSpan[channel - 1].span.setAttributes({
@@ -605,9 +561,7 @@ class TaskTranscribe extends SttTask {
      });
      this.childSpan[channel - 1].span.end();
    }
-    if (!(await this._startFallback(cs, _ep, evt))) {
-      this.notifyTaskDone();
-    }
+    this.notifyTaskDone();
  }

  _startAsrTimer(channel) {
@@ -616,9 +570,8 @@ class TaskTranscribe extends SttTask {
    this._clearAsrTimer(channel);
    this._asrTimer = setTimeout(() => {
      this.logger.debug(`TaskTranscribe:_startAsrTimer - asr timer went off for channel: ${channel}`);
-      const evt = this.consolidateTranscripts(
-        this._bufferedTranscripts[channel - 1], channel, this.language, this.vendor);
-      this._bufferedTranscripts[channel - 1] = [];
+      const evt = this.consolidateTranscripts(this._bufferedTranscripts, channel, this.language, this.vendor);
+      this._bufferedTranscripts = [];
      this._resolve(channel, evt);
    }, this.asrTimeout);
    this.logger.debug(`TaskTranscribe:_startAsrTimer: set for ${this.asrTimeout}ms for channel ${channel}`);
--- a/lib/tasks/tts-task.js
+++ b/lib/tasks/tts-task.js
@@ -1,180 +0,0 @@
-const Task = require('./task');
-const { TaskPreconditions } = require('../utils/constants');
-
-class TtsTask extends Task {
-
-  constructor(logger, data, parentTask) {
-    super(logger, data);
-    this.parentTask = parentTask;
-
-    this.preconditions = TaskPreconditions.Endpoint;
-
-    this.earlyMedia = this.data.earlyMedia === true || (parentTask && parentTask.earlyMedia);
-    this.synthesizer = this.data.synthesizer || {};
-    this.disableTtsCache = this.data.disableTtsCache;
-    this.options = this.synthesizer.options || {};
-  }
-
-  async exec(cs) {
-    super.exec(cs);
-  }
-
-  async _synthesizeWithSpecificVendor(cs, ep, {
-    vendor,
-    language,
-    voice,
-    label,
-    disableTtsStreaming,
-    preCache
-  }) {
-    const {srf, accountSid:account_sid} = cs;
-    const {updateSpeechCredentialLastUsed} = require('../utils/db-utils')(this.logger, srf);
-    const {writeAlerts, AlertType, stats} = srf.locals;
-    const {synthAudio} = srf.locals.dbHelpers;
-    const engine = this.synthesizer.engine || 'standard';
-    const salt = cs.callSid;
-
-    let credentials = cs.getSpeechCredentials(vendor, 'tts', label);
-    /* parse Nuance voices into name and model */
-    let model;
-    if (vendor === 'nuance' && voice) {
-      const arr = /([A-Za-z-]*)\s+-\s+(enhanced|standard)/.exec(voice);
-      if (arr) {
-        voice = arr[1];
-        model = arr[2];
-      }
-    } else if (vendor === 'deepgram') {
-      model = voice;
-    }
-
-    /* allow for microsoft custom region voice and api_key to be specified as an override */
-    if (vendor === 'microsoft' && this.options.deploymentId) {
-      credentials = credentials || {};
-      credentials.use_custom_tts = true;
-      credentials.custom_tts_endpoint = this.options.deploymentId;
-      credentials.api_key = this.options.apiKey || credentials.apiKey;
-      credentials.region = this.options.region || credentials.region;
-      voice = this.options.voice || voice;
-    } else if (vendor === 'elevenlabs') {
-      credentials = credentials || {};
-      credentials.model_id = this.options.model_id || credentials.model_id;
-      credentials.voice_settings = this.options.voice_settings || {};
-      credentials.optimize_streaming_latency = this.options.optimize_streaming_latency
-      || credentials.optimize_streaming_latency;
-      voice = this.options.voice_id || voice;
-    }
-
-    ep.set({
-      tts_engine: vendor,
-      tts_voice: voice,
-      cache_speech_handles: 1,
-    }).catch((err) => this.logger.info({err}, `${this.name}: Error setting tts_engine on endpoint`));
-
-    if (!preCache) this.logger.info({vendor, language, voice, model}, `${this.name}:exec`);
-    try {
-      if (!credentials) {
-        writeAlerts({
-          account_sid,
-          alert_type: AlertType.TTS_NOT_PROVISIONED,
-          vendor
-        }).catch((err) => this.logger.info({err}, 'Error generating alert for no tts'));
-        this.notifyError({
-          msg: 'TTS error',
-          details:`No speech credentials provisioned for selected vendor ${vendor}`
-        });
-        throw new Error('no provisioned speech credentials for TTS');
-      }
-      // synthesize all of the text elements
-      let lastUpdated = false;
-
-      /* produce an audio segment from the provided text */
-      const generateAudio = async(text) => {
-        if (this.killed) return;
-        if (text.startsWith('silence_stream://')) return text;
-
-        /* otel: trace time for tts */
-        if (!preCache && !this.parentTask)  {
-          const {span} = this.startChildSpan('tts-generation', {
-            'tts.vendor': vendor,
-            'tts.language': language,
-            'tts.voice': voice
-          });
-          this.otelSpan = span;
-        }
-        try {
-          const {filePath, servedFromCache, rtt} = await synthAudio(stats, {
-            account_sid,
-            text,
-            vendor,
-            language,
-            voice,
-            engine,
-            model,
-            salt,
-            credentials,
-            options: this.options,
-            disableTtsCache : this.disableTtsCache,
-            disableTtsStreaming,
-            preCache
-          });
-          if (!filePath.startsWith('say:')) {
-            this.logger.debug(`file ${filePath}, served from cache ${servedFromCache}`);
-            if (filePath) cs.trackTmpFile(filePath);
-            if (this.otelSpan) {
-              this.otelSpan.setAttributes({'tts.cached': servedFromCache});
-              this.otelSpan.end();
-              this.otelSpan = null;
-            }
-            if (!servedFromCache && !lastUpdated) {
-              lastUpdated = true;
-              updateSpeechCredentialLastUsed(credentials.speech_credential_sid).catch(() => {/* logged error */});
-            }
-            if (!servedFromCache && rtt && !preCache) {
-              this.notifyStatus({
-                event: 'synthesized-audio',
-                vendor,
-                language,
-                characters: text.length,
-                elapsedTime: rtt
-              });
-            }
-          }
-          else {
-            this.logger.debug('a streaming tts api will be used');
-            const modifiedPath = filePath.replace('say:{', `say:{session-uuid=${ep.uuid},`);
-            return modifiedPath;
-          }
-          return filePath;
-        } catch (err) {
-          this.logger.info({err}, 'Error synthesizing tts');
-          if (this.otelSpan) this.otelSpan.end();
-          writeAlerts({
-            account_sid: cs.accountSid,
-            alert_type: AlertType.TTS_FAILURE,
-            vendor,
-            detail: err.message
-          }).catch((err) => this.logger.info({err}, 'Error generating alert for tts failure'));
-          this.notifyError({msg: 'TTS error', details: err.message || err});
-          throw err;
-        }
-      };
-
-      const arr = this.text.map((t) => (this._validateURL(t) ? t : generateAudio(t)));
-      return (await Promise.all(arr)).filter((fp) => fp && fp.length);
-    } catch (err) {
-      this.logger.info(err, 'TaskSay:exec error');
-      throw err;
-    }
-  }
-
-  _validateURL(urlString) {
-    try {
-      new URL(urlString);
-      return true;
-    } catch (e) {
-      return false;
-    }
-  }
-}
-
-module.exports = TtsTask;
--- a/lib/utils/background-task-manager.js
+++ b/lib/utils/background-task-manager.js
@@ -26,25 +26,25 @@ class BackgroundTaskManager extends Emitter {
    return this.tasks.size;
  }

-  async newTask(type, opts, sticky = false) {
-    this.logger.info({opts}, `initiating Background task ${type}`);
+  async newTask(type, taskOpts) {
+    this.logger.info({taskOpts}, `initiating Background task ${type}`);
    if (this.tasks.has(type)) {
-      this.logger.info(`Background task ${type} is running, skipped`);
+      this.logger.info(`Background task ${type} is running, skiped`);
      return;
    }
    let task;
    switch (type) {
      case 'listen':
-        task = await this._initListen(opts);
+        task = await this._initListen(taskOpts);
        break;
      case 'bargeIn':
-        task = await this._initBargeIn(opts);
+        task = await this._initBargeIn(taskOpts);
        break;
      case 'record':
        task = await this._initRecord();
        break;
      case 'transcribe':
-        task = await this._initTranscribe(opts);
+        task = await this._initTranscribe(taskOpts);
        break;
      default:
        break;
@@ -52,7 +52,6 @@ class BackgroundTaskManager extends Emitter {
    if (task) {
      this.tasks.set(type, task);
    }
-    if (task && sticky) task.sticky = true;
    return task;
  }

@@ -65,6 +64,8 @@ class BackgroundTaskManager extends Emitter {
      task.kill();
      // Remove task from managed List
      this.tasks.delete(type);
+    } else {
+      this.logger.debug(`stopping background task, ${type} is not running, skipped`);
    }
  }

@@ -117,7 +118,7 @@ class BackgroundTaskManager extends Emitter {
          this._taskCompleted('bargeIn', task);
          if (task.sticky && !this.cs.callGone && !this.cs._stopping) {
            this.logger.info('BackgroundTaskManager:_initBargeIn: restarting background bargeIn');
-            this.newTask('bargeIn', opts, true);
+            this.newTask('bargeIn', opts);
          }
          return;
        })
--- a/lib/utils/constants.json
+++ b/lib/utils/constants.json
@@ -1,13 +1,12 @@
 {
  "TaskName": {
-    "Answer": "answer",
+    "Cognigy": "cognigy",
    "Conference": "conference",
    "Config": "config",
    "Dequeue": "dequeue",
    "Dial": "dial",
    "Dialogflow": "dialogflow",
    "Dtmf": "dtmf",
-    "Dub": "dub",
    "Enqueue": "enqueue",
    "Gather": "gather",
    "Hangup": "hangup",
@@ -30,7 +29,7 @@
    "Tag": "tag",
    "Transcribe": "transcribe"
  },
-  "AllowedSipRecVerbs": ["answer", "config", "gather", "transcribe", "listen", "tag"],
+  "AllowedSipRecVerbs": ["config", "gather", "transcribe", "listen", "tag"],
  "AllowedConfirmSessionVerbs": ["config", "gather", "plays", "say", "tag"],
  "CallStatus": {
    "Trying": "trying",
@@ -171,7 +170,6 @@
    "session:new",
    "session:reconnect",
    "session:redirect",
-    "session:adulting",
    "call:status",
    "queue:status",
    "dial:confirm",
--- a/lib/utils/db-utils.js
+++ b/lib/utils/db-utils.js
@@ -41,7 +41,6 @@ const speechMapper = (cred) => {
      const o = JSON.parse(decrypt(credential));
      obj.access_key_id = o.access_key_id;
      obj.secret_access_key = o.secret_access_key;
-      obj.role_arn = o.role_arn;
      obj.aws_region = o.aws_region;
    }
    else if ('microsoft' === obj.vendor) {
@@ -95,17 +94,6 @@ const speechMapper = (cred) => {
      obj.api_key = o.api_key;
      obj.model_id = o.model_id;
      obj.options = o.options;
-    } else if ('playht' === obj.vendor) {
-      const o = JSON.parse(decrypt(credential));
-      obj.api_key = o.api_key;
-      obj.user_id = o.user_id;
-      obj.voice_engine = o.voice_engine;
-      obj.options = o.options;
-    } else if ('rimelabs' === obj.vendor) {
-      const o = JSON.parse(decrypt(credential));
-      obj.api_key = o.api_key;
-      obj.model_id = o.model_id;
-      obj.options = o.options;
    } else if ('assemblyai' === obj.vendor) {
      const o = JSON.parse(decrypt(credential));
      obj.api_key = o.api_key;
--- a/lib/utils/install-srf-locals.js
+++ b/lib/utils/install-srf-locals.js
@@ -179,7 +179,6 @@ function installSrfLocals(srf, logger) {
    addFileToCache,
    getNuanceAccessToken,
    getIbmAccessToken,
-    getAwsAuthToken
  } = require('@jambonz/speech-utils')({}, logger);
  const {
    writeAlerts,
@@ -217,7 +216,6 @@ function installSrfLocals(srf, logger) {
      listCalls,
      deleteCall,
      synthAudio,
-      getAwsAuthToken,
      addFileToCache,
      createHash,
      retrieveHash,
--- a/lib/utils/parse-decibels.js
+++ b/lib/utils/parse-decibels.js
@@ -1,18 +0,0 @@
-const parseDecibels = (db) => {
-  if (!db) return 0;
-  if (typeof db === 'number') {
-    return db;
-  }
-  else if (typeof db === 'string') {
-    const match = db.match(/([+-]?\d+(\.\d+)?)\s*db/i);
-    if (match) {
-      return Math.trunc(parseFloat(match[1]));
-    } else {
-      return 0;
-    }
-  } else {
-    return 0;
-  }
-};
-
-module.exports = parseDecibels;
--- a/lib/utils/place-outdial.js
+++ b/lib/utils/place-outdial.js
@@ -295,17 +295,17 @@ class SingleDialer extends Emitter {
        if (err.status === 487) status.callStatus = CallStatus.NoAnswer;
        else if ([486, 600].includes(err.status)) status.callStatus = CallStatus.Busy;
        this.logger.info(`SingleDialer:exec outdial failure ${err.status}`);
-        inviteSpan?.setAttributes({'invite.status_code': err.status});
-        inviteSpan?.end();
+        inviteSpan.setAttributes({'invite.status_code': err.status});
+        inviteSpan.end();
      }
      else {
        this.logger.error(err, 'SingleDialer:exec');
        status.sipStatus = 500;
-        inviteSpan?.setAttributes({
+        inviteSpan.setAttributes({
          'invite.status_code': 500,
          'invite.err': err.message
        });
-        inviteSpan?.end();
+        inviteSpan.end();
      }
      this.emit('callStatusChange', status);
      if (this.ep) this.ep.destroy();
@@ -413,7 +413,6 @@ class SingleDialer extends Emitter {
    const app = {...application};
    if ('WS' === app.call_hook?.method ||
      app.call_hook?.url.startsWith('ws://') || app.call_hook?.url.startsWith('wss://')) {
-      if (app.call_hook?.url) app.call_hook.url += '/adulting';
      const requestor = new WsRequestor(logger, this.accountInfo.account.account_sid,
        app.call_hook, this.accountInfo.account.webhook_secret);
      app.requestor = requestor;
@@ -439,13 +438,6 @@ class SingleDialer extends Emitter {
      tasks,
      rootSpan
    });
-    app.requestor.request('session:adulting', '/adulting', {
-      ...cs.callInfo.toJSON(),
-      parentCallInfo: this.parentCallInfo
-    }).catch((err) => {
-      newLogger.error({err}, 'doAdulting: error sending adulting request');
-    });
-
    cs.req = this.req;
    cs.exec().catch((err) => newLogger.error({err}, 'doAdulting: error executing session'));
    return cs;
--- a/lib/utils/transcription-utils.js
+++ b/lib/utils/transcription-utils.js
@@ -270,7 +270,7 @@ const normalizeDeepgram = (evt, channel, language, shortUtterance) => {
    language_code: language,
    channel_tag: channel,
    is_final: shortUtterance ? evt.is_final : evt.speech_final,
-    alternatives: alternatives.length ? [alternatives[0]] : [],
+    alternatives: [alternatives[0]],
    vendor: {
      name: 'deepgram',
      evt: copy
@@ -487,10 +487,14 @@ module.exports = (logger) => {
    };

    if ('google' === vendor) {
-      const useV2 = rOpts.googleOptions?.serviceVersion === 'v2';
-      const model = task.name === TaskName.Gather ?
-        (useV2 ? 'telephony_short' : 'command_and_search') :
-        (useV2 ? 'long' : 'latest_long');
+      const model = task.name === TaskName.Gather ? 'command_and_search' : 'latest_long';
+      /**
+       * When we support google v2 the models are different and we will want something like:
+       * const useV2 = sttCredentials?.credentials?.project_id; //TODO: v2 pref should be set in googleOptions
+       * const model = task.name === TaskName.Gather ?
+       *  (useV2 ? 'telephony_short' : 'command_and_search') :
+       * (useV2 ? 'long' : 'latest_long');
+       */
      opts = {
        ...opts,
        ...(sttCredentials && {GOOGLE_APPLICATION_CREDENTIALS: JSON.stringify(sttCredentials.credentials)}),
@@ -523,26 +527,12 @@ module.exports = (logger) => {
        ...{GOOGLE_SPEECH_MODEL: rOpts.model || model},
        ...(rOpts.naicsCode > 0 && {GOOGLE_SPEECH_METADATA_INDUSTRY_NAICS_CODE: rOpts.naicsCode}),
        GOOGLE_SPEECH_METADATA_RECORDING_DEVICE_TYPE: 'phone_line',
+        /*
        ...(useV2 && {
          GOOGLE_SPEECH_RECOGNIZER_PARENT: `projects/${sttCredentials.credentials.project_id}/locations/global`,
-          GOOGLE_SPEECH_CLOUD_SERVICES_VERSION: 'v2',
-          ...(rOpts.googleOptions?.speechStartTimeoutMs && {
-            GOOGLE_SPEECH_START_TIMEOUT_MS: rOpts.googleOptions.speechStartTimeoutMs
-          }),
-          ...(rOpts.googleOptions?.speechEndTimeoutMs && {
-            GOOGLE_SPEECH_END_TIMEOUT_MS: rOpts.googleOptions.speechEndTimeoutMs
-          }),
-          ...(rOpts.googleOptions?.transcriptNormalization && {
-            GOOGLE_SPEECH_TRANSCRIPTION_NORMALIZATION: JSON.stringify(rOpts.googleOptions.transcriptNormalization)
-          }),
-          ...(rOpts.googleOptions?.enableVoiceActivityEvents && {
-            GOOGLE_SPEECH_ENABLE_VOICE_ACTIVITY_EVENTS: rOpts.googleOptions.enableVoiceActivityEvents
-          }),
-          ...(rOpts.sgoogleOptions?.recognizerId) && {GOOGLE_SPEECH_RECOGNIZER_ID: rOpts.googleOptions.recognizerId},
-          ...(rOpts.googleOptions?.enableVoiceActivityEvents && {
-            GOOGLE_SPEECH_ENABLE_VOICE_ACTIVITY_EVENTS: rOpts.googleOptions.enableVoiceActivityEvents
-          }),
-        }),
+          GOOGLE_SPEECH_CLOUD_SERVICES_VERSION: 'v2'
+      }),
+      */
      };
    }
    else if (['aws', 'polly'].includes(vendor)) {
@@ -552,10 +542,9 @@ module.exports = (logger) => {
        ...(rOpts.vocabularyFilterName && {AWS_VOCABULARY_FILTER_NAME: rOpts.vocabularyFilterName}),
        ...(rOpts.filterMethod && {AWS_VOCABULARY_FILTER_METHOD: rOpts.filterMethod}),
        ...(sttCredentials && {
-          ...(sttCredentials.accessKeyId && {AWS_ACCESS_KEY_ID: sttCredentials.accessKeyId}),
-          ...(sttCredentials.secretAccessKey && {AWS_SECRET_ACCESS_KEY: sttCredentials.secretAccessKey}),
-          AWS_REGION: sttCredentials.region,
-          ...(sttCredentials.sessionToken && {AWS_SESSION_TOKEN: sttCredentials.sessionToken}),
+          AWS_ACCESS_KEY_ID: sttCredentials.accessKeyId,
+          AWS_SECRET_ACCESS_KEY: sttCredentials.secretAccessKey,
+          AWS_REGION: sttCredentials.region
        }),
      };
    }
@@ -691,9 +680,7 @@ module.exports = (logger) => {
        ...(deepgramOptions.keywords) &&
          {DEEPGRAM_SPEECH_KEYWORDS: deepgramOptions.keywords.join(',')},
        ...('endpointing' in deepgramOptions) &&
-          {DEEPGRAM_SPEECH_ENDPOINTING: deepgramOptions.endpointing === false ? 'false' : deepgramOptions.endpointing,
-            // default DEEPGRAM_SPEECH_UTTERANCE_END_MS is 1000, will be override by user settings later if there is.
-            DEEPGRAM_SPEECH_UTTERANCE_END_MS: 1000},
+          {DEEPGRAM_SPEECH_ENDPOINTING: deepgramOptions.endpointing === false ? 'false' : deepgramOptions.endpointing},
        ...(deepgramOptions.utteranceEndMs) &&
          {DEEPGRAM_SPEECH_UTTERANCE_END_MS: deepgramOptions.utteranceEndMs},
        ...(deepgramOptions.vadTurnoff) &&
--- a/lib/utils/ws-requestor.js
+++ b/lib/utils/ws-requestor.js
@@ -56,12 +56,6 @@ class WsRequestor extends BaseRequestor {
    }

    if (type === 'session:new') this.call_sid = params.callSid;
-    if (type === 'session:reconnect') {
-      this._reconnectPromise = new Promise((resolve, reject) => {
-        this._reconnectResolve = resolve;
-        this._reconnectReject = reject;
-      });
-    }

    /* if we have an absolute url, and it is http then do a standard webhook */
    if (this._isAbsoluteUrl(url) && url.startsWith('http')) {
@@ -77,23 +71,20 @@ class WsRequestor extends BaseRequestor {
    }

    /* connect if necessary */
-    const queueMsg = () => {
-      this.logger.debug(
-        `WsRequestor:request(${this.id}) - queueing ${type} message since we are connecting`);
-      if (wantsAck) {
-        const p = new Promise((resolve, reject) => {
-          this.queuedMsg.push({type, hook, params, httpHeaders, promise: {resolve, reject}});
-        });
-        return p;
-      }
-      else {
-        this.queuedMsg.push({type, hook, params, httpHeaders});
-      }
-      return;
-    };
    if (!this.ws) {
      if (this.connectInProgress) {
-        return queueMsg();
+        this.logger.debug(
+          `WsRequestor:request(${this.id}) - queueing ${type} message since we are connecting`);
+        if (wantsAck) {
+          const p = new Promise((resolve, reject) => {
+            this.queuedMsg.push({type, hook, params, httpHeaders, promise: {resolve, reject}});
+          });
+          return p;
+        }
+        else {
+          this.queuedMsg.push({type, hook, params, httpHeaders});
+        }
+        return;
      }
      this.connectInProgress = true;
      this.logger.debug(`WsRequestor:request(${this.id}) - connecting since we do not have a connection for ${type}`);
@@ -111,10 +102,6 @@ class WsRequestor extends BaseRequestor {
        return Promise.reject(err);
      }
    }
-    // If jambonz wait for ack from reconnect, queue the msg until reconnect is acked
-    if (type !== 'session:reconnect' && this._reconnectPromise) {
-      return queueMsg();
-    }
    assert(this.ws);

    /* prepare and send message */
@@ -132,7 +119,7 @@ class WsRequestor extends BaseRequestor {
      type,
      msgid,
      call_sid: this.call_sid,
-      hook: ['verb:hook', 'session:redirect'].includes(type) ? url : undefined,
+      hook: type === 'verb:hook' ? url : undefined,
      data: {...payload},
      ...b3
    };
@@ -152,18 +139,6 @@ class WsRequestor extends BaseRequestor {
      }
    };

-    const rejectQueuedMsgs = (err) => {
-      if (this.queuedMsg.length > 0) {
-        for (const {promise} of this.queuedMsg) {
-          this.logger.debug(`WsRequestor:request - preparing queued ${type} for rejectQueuedMsgs`);
-          if (promise) {
-            promise.reject(err);
-          }
-        }
-        this.queuedMsg.length = 0;
-      }
-    };
-
    //this.logger.debug({obj}, `websocket: sending (${url})`);

    /* special case: reconnecting before we received ack to session:new */
@@ -204,37 +179,16 @@ class WsRequestor extends BaseRequestor {
          this.logger.debug({response}, `WsRequestor:request ${url} succeeded in ${rtt}ms`);
          this.stats.histogram('app.hook.ws_response_time', rtt, ['hook_type:app']);
          resolve(response);
-          if (this._reconnectResolve) {
-            this._reconnectResolve();
-          }
        },
        failure: (err) => {
-          if (this._reconnectReject) {
-            this._reconnectReject(err);
-          }
          clearTimeout(timer);
          reject(err);
        }
      });

      /* send the message */
-      this.ws.send(JSON.stringify(obj), async() => {
+      this.ws.send(JSON.stringify(obj), () => {
        this.logger.debug({obj}, `WsRequestor:request websocket: sent (${url})`);
-        // If session:reconnect is waiting for ack, hold here until ack to send queuedMsgs
-        if (this._reconnectPromise) {
-          try {
-            await this._reconnectPromise;
-          } catch (err) {
-            // bad thing happened to session:recconnect
-            rejectQueuedMsgs(err);
-            this.emit('reconnect-error');
-            return;
-          } finally {
-            this._reconnectPromise = null;
-            this._reconnectResolve = null;
-            this._reconnectReject = null;
-          }
-        }
        sendQueuedMsgs();
      });
    });
@@ -392,9 +346,7 @@ class WsRequestor extends BaseRequestor {
    /* messages must be JSON format */
    try {
      const obj = JSON.parse(content);
-      //const {type, msgid, command, call_sid = this.call_sid, queueCommand = false, data} = obj;
-      const {type, msgid, command, queueCommand = false, data} = obj;
-      const call_sid = obj.callSid || this.call_sid;
+      const {type, msgid, command, call_sid = this.call_sid, queueCommand = false, data} = obj;

      //this.logger.debug({obj}, 'WsRequestor:request websocket: received');
      assert.ok(type, 'type property not supplied');
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "jambonz-feature-server",
-  "version": "0.9.0",
+  "version": "0.8.6",
  "main": "app.js",
  "engines": {
    "node": ">= 18.x"
@@ -25,57 +25,57 @@
    "jslint:fix": "eslint app.js tracer.js lib --fix"
  },
  "dependencies": {
-    "@aws-sdk/client-auto-scaling": "^3.549.0",
-    "@aws-sdk/client-sns": "^3.549.0",
+    "@aws-sdk/client-auto-scaling": "^3.360.0",
+    "@aws-sdk/client-sns": "^3.360.0",
    "@jambonz/db-helpers": "^0.9.3",
    "@jambonz/http-health-check": "^0.0.1",
-    "@jambonz/mw-registrar": "^0.2.7",
-    "@jambonz/realtimedb-helpers": "^0.8.8",
-    "@jambonz/speech-utils": "^0.1.0",
+    "@jambonz/mw-registrar": "^0.2.4",
+    "@jambonz/realtimedb-helpers": "^0.8.7",
+    "@jambonz/speech-utils": "^0.0.42",
    "@jambonz/stats-collector": "^0.1.9",
    "@jambonz/time-series": "^0.2.8",
-    "@jambonz/verb-specifications": "^0.0.69",
-    "@opentelemetry/api": "^1.8.0",
-    "@opentelemetry/exporter-jaeger": "^1.23.0",
-    "@opentelemetry/exporter-trace-otlp-http": "^0.50.0",
-    "@opentelemetry/exporter-zipkin": "^1.23.0",
-    "@opentelemetry/instrumentation": "^0.50.0",
-    "@opentelemetry/resources": "^1.23.0",
-    "@opentelemetry/sdk-trace-base": "^1.23.0",
-    "@opentelemetry/sdk-trace-node": "^1.23.0",
-    "@opentelemetry/semantic-conventions": "^1.23.0",
+    "@jambonz/verb-specifications": "^0.0.63",
+    "@opentelemetry/api": "^1.4.0",
+    "@opentelemetry/exporter-jaeger": "^1.9.0",
+    "@opentelemetry/exporter-trace-otlp-http": "^0.35.0",
+    "@opentelemetry/exporter-zipkin": "^1.9.0",
+    "@opentelemetry/instrumentation": "^0.35.0",
+    "@opentelemetry/resources": "^1.9.0",
+    "@opentelemetry/sdk-trace-base": "^1.9.0",
+    "@opentelemetry/sdk-trace-node": "^1.9.0",
+    "@opentelemetry/semantic-conventions": "^1.9.0",
    "bent": "^7.3.12",
    "debug": "^4.3.4",
    "deepcopy": "^2.1.0",
-    "drachtio-fsmrf": "^3.0.41",
+    "drachtio-fsmrf": "^3.0.38",
    "drachtio-srf": "^4.5.31",
-    "express": "^4.19.2",
+    "express": "^4.18.2",
    "express-validator": "^7.0.1",
-    "ip": "^2.0.1",
-    "moment": "^2.30.1",
-    "parse-url": "^9.2.0",
-    "pino": "^8.20.0",
+    "ip": "^1.1.9",
+    "moment": "^2.29.4",
+    "parse-url": "^8.1.0",
+    "pino": "^8.8.0",
    "polly-ssml-split": "^0.1.0",
    "proxyquire": "^2.1.3",
-    "sdp-transform": "^2.14.2",
-    "short-uuid": "^5.1.0",
-    "sinon": "^17.0.1",
+    "sdp-transform": "^2.14.1",
+    "short-uuid": "^4.2.2",
+    "sinon": "^15.0.1",
    "to-snake-case": "^1.0.0",
-    "undici": "^6.15.0",
+    "undici": "^5.28.3",
    "uuid-random": "^1.3.2",
    "verify-aws-sns-signature": "^0.1.0",
-    "ws": "^8.17.0",
+    "ws": "^8.9.0",
    "xml2js": "^0.6.2"
  },
  "devDependencies": {
    "clear-module": "^4.1.2",
-    "eslint": "7.32.0",
-    "eslint-plugin-promise": "^6.1.1",
+    "eslint": "^7.32.0",
+    "eslint-plugin-promise": "^4.3.1",
    "nyc": "^15.1.0",
-    "tape": "^5.7.5"
+    "tape": "^5.6.1"
  },
  "optionalDependencies": {
-    "bufferutil": "^4.0.8",
-    "utf-8-validate": "^6.0.3"
+    "bufferutil": "^4.0.6",
+    "utf-8-validate": "^5.0.8"
  }
 }
--- a/test/docker-compose-testbed.yaml
+++ b/test/docker-compose-testbed.yaml
@@ -57,7 +57,7 @@ services:
        condition: service_healthy

  freeswitch:
-    image: drachtio/drachtio-freeswitch-mrf:0.7.3
+    image: drachtio/drachtio-freeswitch-mrf:0.6.2
    restart: always
    command: freeswitch --rtp-range-start 20000 --rtp-range-end 20100
    environment:
Author	SHA1	Message	Date
Dave Horton	8938bf25dc	race condition where gather transcribe is restarted after final transcript	2024-05-21 19:04:55 -04:00
Dave Horton	f7134d8fe7	more logging on restart of transcribing during gather	2024-05-10 14:12:34 -04:00
Dave Horton	a23dc50c20	lint	2024-05-03 08:56:55 -04:00
Dave Horton	888fddff37	possible fix for race condition in gather which ends but lets transcription continue	2024-05-03 08:55:16 -04:00
Dave Horton	e1497f90a8	update with various deepgram fixes, including for #700	2024-04-01 13:03:52 -04:00