freeswitch capture sip error and propagate the same error (#1489)

* fix: propagate SIP 488 error to SBC on endpoint allocation failure

When FreeSWITCH returns a SIP 488 'Not Acceptable Here' error during
endpoint allocation (e.g., codec incompatibility), this error was not
being propagated back to the SBC/client. Instead, the call would wait
indefinitely for websocket commands or return a generic 603 response.

Implementation:
- In _evalEndpointPrecondition(), detect SipError by checking
  err.type === 'SipError' or err.name === 'SipError'
- Extract the SIP status code (e.g., 488), reason, and the Reason
  header from the error response (e.g., Q.850;cause=88;text=INCOMPATIBLE_DESTINATION)
- Send the SIP error response immediately to the SBC with:
  - X-Reason header: endpoint allocation failure details
  - Reason header: original Q.850 cause from FreeSWITCH
- Notify call status change as Failed with proper SIP status
- Release the call immediately instead of waiting for commands

Also added fallback handling in InboundCallSession._onTasksDone() to
propagate the stored error if immediate send was not possible.

* wip

* Simplify SipError check to only use err.name

lib/config.js

@@ -139,6 +139,11 @@ const JAMBONES_USE_FREESWITCH_TIMER_FD = process.env.JAMBONES_USE_FREESWITCH_TIM
 const JAMBONES_DIAL_SBC_FOR_REGISTERED_USER = process.env.JAMBONES_DIAL_SBC_FOR_REGISTERED_USER || false;
 const JAMBONES_MEDIA_TIMEOUT_MS = process.env.JAMBONES_MEDIA_TIMEOUT_MS || 0;
 const JAMBONES_MEDIA_HOLD_TIMEOUT_MS = process.env.JAMBONES_MEDIA_HOLD_TIMEOUT_MS || 0;
+const JAMBONES_WEBHOOK_ERROR_RETURN = parseInt(process.env.JAMBONES_WEBHOOK_ERROR_RETURN, 10) || 480;
+
+/* say / tts */
+const JAMBONES_SAY_CHUNK_SIZE = parseInt(process.env.JAMBONES_SAY_CHUNK_SIZE, 10) || 900;
+
 // jambonz
 const JAMBONES_TRANSCRIBE_EP_DESTROY_DELAY_MS =
   process.env.JAMBONES_TRANSCRIBE_EP_DESTROY_DELAY_MS;
@@ -231,5 +236,7 @@ module.exports = {
   JAMBONES_DIAL_SBC_FOR_REGISTERED_USER,
   JAMBONES_MEDIA_TIMEOUT_MS,
   JAMBONES_MEDIA_HOLD_TIMEOUT_MS,
+  JAMBONES_SAY_CHUNK_SIZE,
   JAMBONES_TRANSCRIBE_EP_DESTROY_DELAY_MS,
+  JAMBONES_WEBHOOK_ERROR_RETURN
 };

lib/http-routes/api/create-call.js

@@ -291,7 +291,7 @@ router.post('/',
             }, {
               ...(account.enable_debug_log && {level: 'debug'})
             });
-            app.requestor.logger = app.notifier.logger = sipLogger;
+            app.requestor.logger = app.notifier.logger = restDial.logger = sipLogger;
             const callInfo = new CallInfo({
               direction: CallDirection.Outbound,
               req: inviteReq,

lib/middleware.js

@@ -12,7 +12,8 @@ const RootSpan = require('./utils/call-tracer');
 const listTaskNames = require('./utils/summarize-tasks');
 const {
   JAMBONES_MYSQL_REFRESH_TTL,
-  JAMBONES_DISABLE_DIRECT_P2P_CALL
+  JAMBONES_DISABLE_DIRECT_P2P_CALL,
+  JAMBONES_WEBHOOK_ERROR_RETURN
 } = require('./config');
 const { createJambonzApp } = require('./dynamic-apps');
 const { decrypt } = require('./utils/encrypt-decrypt');
@@ -480,7 +481,7 @@ module.exports = function(srf, logger) {
         message: `${err?.message}`.trim()
       }).catch((err) => this.logger.info({err}, 'Error generating alert for parsing application'));
       logger.info({err}, `Error retrieving or parsing application: ${err?.message}`);
-      res.send(480, {headers: {'X-Reason': err?.message || 'unknown'}});
+      res.send(JAMBONES_WEBHOOK_ERROR_RETURN, {headers: {'X-Reason': err?.message || 'unknown'}});
       app.requestor.close(WS_CLOSE_CODES.GoingAway);
     }
   }

lib/session/call-info.js

@@ -12,6 +12,7 @@ class CallInfo {
     let srf;
     this.direction = opts.direction;
     this.traceId = opts.traceId;
+    this.hasRecording = false;
     this.callTerminationBy = undefined;
     if (opts.req) {
       const u = opts.req.getParsedHeader('from');

lib/session/call-session.js

@@ -504,7 +504,12 @@ class CallSession extends Emitter {
   }
 
   get isTtsStreamEnabled() {
-    return this.backgroundTaskManager.isTaskRunning('ttsStream');
+    // 1st background tts stream
+    return this.backgroundTaskManager.isTaskRunning('ttsStream') ||
+    // 2nd current task streaming tts
+    TaskName.Say === this.currentTask?.name && this.currentTask?.isStreamingTts ||
+    // 3rd nested verb is streaming tts
+    TaskName.Gather === this.currentTask?.name && this.currentTask.sayTask?.isStreamingTts;
   }
 
   get isListenEnabled() {
@@ -751,69 +756,101 @@ class CallSession extends Emitter {
     return this._fillerNoise;
   }
 
-  async pauseOrResumeBackgroundListenIfRequired(action, silence = false) {
-    if ((action == 'pauseCallRecording' || action == 'resumeCallRecording') &&
-    this.backgroundTaskManager.isTaskRunning('record')) {
-      this.logger.debug({action, silence}, 'CallSession:pauseOrResumeBackgroundListenIfRequired');
-      const backgroundListenTask = this.backgroundTaskManager.getTask('record');
-      const status = action === 'pauseCallRecording' ? ListenStatus.Pause : ListenStatus.Resume;
-      backgroundListenTask.updateListen(
-        status,
-        silence
-      );
-    }
-  }
 
   async notifyRecordOptions(opts) {
-    const {action, silence} = opts;
+    const {action, silence = false, type = 'siprec'} = opts;
     this.logger.debug({opts}, 'CallSession:notifyRecordOptions');
 
-    this.pauseOrResumeBackgroundListenIfRequired(action, silence);
-
-    /* if we have not answered yet, just save the details for later */
-    if (!this.dlg) {
-      if (action === 'startCallRecording') {
-        this.recordOptions = opts;
-        return true;
+    if (type == 'cloud') {
+      switch (action) {
+        case 'pauseCallRecording':
+          if (this.backgroundTaskManager.isTaskRunning('record')) {
+            this.logger.debug({action, silence, type}, 'CallSession:cloudRecording');
+            const backgroundListenTask = this.backgroundTaskManager.getTask('record');
+            backgroundListenTask.updateListen(
+              ListenStatus.Pause,
+              silence
+            );
+            return true;
+          } else { return false; }
+        case 'resumeCallRecording':
+          if (this.backgroundTaskManager.isTaskRunning('record')) {
+            this.logger.debug({action, silence, type}, 'CallSession:cloudRecording');
+            const backgroundListenTask = this.backgroundTaskManager.getTask('record');
+            backgroundListenTask.updateListen(
+              ListenStatus.Resume,
+              silence
+            );
+            return true;
+          } else { return false; }
+        case 'startCallRecording':
+          if (!this.backgroundTaskManager.isTaskRunning('record')) {
+            this.logger.debug({action, silence, type}, 'CallSession:cloudRecording');
+            this.callInfo.hasRecording = true;
+            this.updateCallStatus(Object.assign({}, this.callInfo.toJSON()), this.serviceUrl)
+              .catch((err) => this.logger.error(err, 'redis error'));
+            if (!this.dlg) {
+              // Call not yet answered so set flag to record on status change
+              this.application.record_all_calls = true;
+            } else {
+              this.backgroundTaskManager.newTask('record');
+            }
+            return true;
+          } else { return false; }
+        case 'stopCallRecording':
+          if (this.backgroundTaskManager.isTaskRunning('record')) {
+            this.logger.debug({action, silence, type}, 'CallSession:cloudRecording');
+            this.backgroundTaskManager.stop('record');
+            return true;
+          } else { return false; }
+      }
+    } else {
+      // SIPREC
+      /* if we have not answered yet, just save the details for later */
+      if (!this.dlg) {
+        if (action === 'startCallRecording') {
+          this.recordOptions = opts;
+          return true;
+        }
+        return false;
       }
-      return false;
-    }
 
-    /* check validity of request */
-    if (action == 'startCallRecording' && this.recordState !== RecordState.RecordingOff) {
-      this.logger.info({recordState: this.recordState},
-        'CallSession:notifyRecordOptions: recording is already started, ignoring request');
-      return false;
-    }
-    if (action == 'stopCallRecording' && this.recordState === RecordState.RecordingOff) {
-      this.logger.info({recordState: this.recordState},
-        'CallSession:notifyRecordOptions: recording is already stopped, ignoring request');
-      return false;
-    }
-    if (action == 'pauseCallRecording' && this.recordState !== RecordState.RecordingOn) {
-      this.logger.info({recordState: this.recordState},
-        'CallSession:notifyRecordOptions: cannot pause recording, ignoring request ');
-      return false;
-    }
-    if (action == 'resumeCallRecording' && this.recordState !== RecordState.RecordingPaused) {
-      this.logger.info({recordState: this.recordState},
-        'CallSession:notifyRecordOptions: cannot resume recording, ignoring request ');
-      return false;
-    }
+      /* check validity of request */
+      if (action == 'startCallRecording' && this.recordState !== RecordState.RecordingOff) {
+        this.logger.info({recordState: this.recordState},
+          'CallSession:notifyRecordOptions: recording is already started, ignoring request');
+        return false;
+      }
+      if (action == 'stopCallRecording' && this.recordState === RecordState.RecordingOff) {
+        this.logger.info({recordState: this.recordState},
+          'CallSession:notifyRecordOptions: recording is already stopped, ignoring request');
+        return false;
+      }
+      if (action == 'pauseCallRecording' && this.recordState !== RecordState.RecordingOn) {
+        this.logger.info({recordState: this.recordState},
+          'CallSession:notifyRecordOptions: cannot pause recording, ignoring request ');
+        return false;
+      }
+      if (action == 'resumeCallRecording' && this.recordState !== RecordState.RecordingPaused) {
+        this.logger.info({recordState: this.recordState},
+          'CallSession:notifyRecordOptions: cannot resume recording, ignoring request ');
+        return false;
+      }
 
-    this.recordOptions = opts;
+      this.recordOptions = opts;
 
-    switch (action) {
-      case 'startCallRecording':
-        return await this.startRecording();
-      case 'stopCallRecording':
-        return await this.stopRecording();
-      case 'pauseCallRecording':
-        return await this.pauseRecording();
-      case 'resumeCallRecording':
-        return await this.resumeRecording();
-      default:
-        throw new Error(`invalid record action ${action}`);
+      switch (action) {
+        case 'startCallRecording':
+          return await this.startRecording();
+        case 'stopCallRecording':
+          return await this.stopRecording();
+        case 'pauseCallRecording':
+          return await this.pauseRecording();
+        case 'resumeCallRecording':
+          return await this.resumeRecording();
+        default:
+          throw new Error(`invalid record action ${action}`);
+      }
     }
   }
 
@@ -927,7 +964,7 @@ class CallSession extends Emitter {
         this.logger.debug('CallSession:enableBackgroundTtsStream - ttsStream enabled');
       } else {
         this.logger.debug(
-          'CallSession:enableBackgroundTtsStream - ignoring request as call does not have required conditions');
+          'CallSession:enableBackgroundTtsStream - ignoring request; conditions not met (probably not using ws api)');
       }
     }  catch (err) {
       this.logger.info({err, say}, 'CallSession:enableBackgroundTtsStream - Error creating background tts stream task');
@@ -941,9 +978,11 @@ class CallSession extends Emitter {
     }
   }
   clearTtsStream() {
-    this.requestor?.request('tts:streaming-event', '/streaming-event', {event_type: 'user_interruption'})
-      .catch((err) => this.logger.info({err}, 'CallSession:clearTtsStream - Error sending user_interruption'));
-    this.ttsStreamingBuffer?.clear();
+    if (this.isTtsStreamEnabled) {
+      this.requestor?.request('tts:streaming-event', '/streaming-event', {event_type: 'user_interruption'})
+        .catch((err) => this.logger.info({err}, 'CallSession:clearTtsStream - Error sending user_interruption'));
+      this.ttsStreamingBuffer?.clear();
+    }
   }
 
   startTtsStream() {
@@ -951,7 +990,7 @@ class CallSession extends Emitter {
   }
 
   stopTtsStream() {
-    if (this.appIsUsingWebsockets) {
+    if (this.isTtsStreamEnabled) {
       this.requestor?.request('tts:streaming-event', '/streaming-event', {event_type: 'stream_closed'})
         .catch((err) => this.logger.info({err}, 'CallSession:clearTtsStream - Error sending user_interruption'));
       this.ttsStreamingBuffer?.stop();
@@ -1248,9 +1287,10 @@ class CallSession extends Emitter {
       }
       else {
         writeAlerts({
-          alert_type: AlertType.STT_NOT_PROVISIONED,
+          alert_type: type === 'tts' ? AlertType.TTS_NOT_PROVISIONED : AlertType.STT_NOT_PROVISIONED,
           account_sid: this.accountSid,
           vendor,
+          label,
           target_sid: this.callSid
         }).catch((err) => this.logger.error({err}, 'Error writing tts alert'));
       }
@@ -2460,6 +2500,36 @@ Duration=${duration} `
       }
       else {
         this.logger.error(err, `Error attempting to allocate endpoint for for task ${task.name}`);
+        // Check for SipError type (e.g., 488 codec incompatibility)
+        const isSipError = err.name === 'SipError';
+        if (isSipError && err.status) {
+          // Extract Reason header from SIP response if available (e.g., Q.850;cause=88;text="INCOMPATIBLE_DESTINATION")
+          const sipReasonHeader = err.res?.msg?.headers?.reason;
+          this._endpointAllocationError = {
+            status: err.status,
+            reason: err.reason || 'Endpoint Allocation Failed',
+            sipReasonHeader
+          };
+          this.logger.info({endpointAllocationError: this._endpointAllocationError},
+            'Captured SipError for propagation to SBC');
+
+          // Send SIP error response immediately for inbound calls
+          if (this.res && !this.res.finalResponseSent) {
+            this.logger.info(`Sending ${err.status} response to SBC due to SipError`);
+            this.res.send(err.status, {
+              headers: {
+                'X-Reason': `endpoint allocation failure: ${err.reason || 'Endpoint Allocation Failed'}`,
+                ...(sipReasonHeader && {'Reason': sipReasonHeader})
+              }
+            });
+            this._notifyCallStatusChange({
+              callStatus: CallStatus.Failed,
+              sipStatus: err.status,
+              sipReason: err.reason || 'Endpoint Allocation Failed'
+            });
+            this._callReleased();
+          }
+        }
         throw new Error(`${BADPRECONDITIONS}: unable to allocate endpoint`);
       }
     }
@@ -2972,8 +3042,7 @@ Duration=${duration} `
 
     // manage record all call.
     if (callStatus === CallStatus.InProgress) {
-      if (this.accountInfo.account.record_all_calls ||
-        this.application.record_all_calls) {
+      if (this.accountInfo.account.record_all_calls || this.application.record_all_calls) {
         this.backgroundTaskManager.newTask('record');
       }
     } else if (callStatus == CallStatus.Completed) {

lib/session/inbound-call-session.js

@@ -60,6 +60,19 @@ class InboundCallSession extends CallSession {
           }
         });
       }
+      else if (this._endpointAllocationError) {
+        // Propagate SIP error from endpoint allocation failure back to the client
+        const {status, reason, sipReasonHeader} = this._endpointAllocationError;
+        this.rootSpan.setAttributes({'call.termination': `endpoint allocation SIP error ${status}`});
+        this.logger.info({endpointAllocationError: this._endpointAllocationError},
+          `InboundCallSession:_onTasksDone generating ${status} due to endpoint allocation failure`);
+        this.res.send(status, {
+          headers: {
+            'X-Reason': `endpoint allocation failure: ${reason}`,
+            ...(sipReasonHeader && {'Reason': sipReasonHeader})
+          }
+        });
+      }
       else {
         this.rootSpan.setAttributes({'call.termination': 'tasks completed without answering call'});
         this.logger.info('InboundCallSession:_onTasksDone auto-generating non-success response to invite');

lib/tasks/gather.js

@@ -500,6 +500,10 @@ class TaskGather extends SttTask {
         this.addCustomEventListener(ep, GladiaTranscriptionEvents.ConnectFailure,
           this._onVendorConnectFailure.bind(this, cs, ep));
         this.addCustomEventListener(ep, GladiaTranscriptionEvents.Error, this._onVendorError.bind(this, cs, ep));
+        // gladia require unique url for each session
+        const {host, path} = await this.createGladiaLiveSession();
+        opts.GLADIA_SPEECH_HOST = host;
+        opts.GLADIA_SPEECH_PATH = path;
         break;
 
       case 'soniox':
@@ -881,7 +885,7 @@ class TaskGather extends SttTask {
         this._fillerNoiseOn = false;  // in a race, if we just started audio it may sneak through here
         this.ep.api('uuid_break', this.ep.uuid)
           .catch((err) => this.logger.info(err, 'Error killing audio'));
-        cs.clearTtsStream();
+        if (cs.isTtsStreamEnabled) cs.clearTtsStream();
       }
       return;
     }
@@ -1318,6 +1322,8 @@ class TaskGather extends SttTask {
     }
 
     this.resolved = true;
+    // gather is resolved, prevent any further transcription events while resolve in progress
+    this.removeCustomEventListeners();
     // If bargin is false and ws application return ack to verb:hook
     // the gather should not play any audio
     this._killAudio(this.cs);

lib/tasks/llm/llms/ultravox_s2s.js

@@ -146,8 +146,9 @@ class TaskLlmUltravox_S2S extends Task {
     return data;
   }
 
-  _unregisterHandlers() {
+  _unregisterHandlers(ep) {
     this.removeCustomEventListeners();
+    ep.removeAllListeners('dtmf');
   }
 
   _registerHandlers(ep) {
@@ -155,6 +156,7 @@ class TaskLlmUltravox_S2S extends Task {
     this.addCustomEventListener(ep, LlmEvents_Ultravox.ConnectFailure, this._onConnectFailure.bind(this, ep));
     this.addCustomEventListener(ep, LlmEvents_Ultravox.Disconnect, this._onDisconnect.bind(this, ep));
     this.addCustomEventListener(ep, LlmEvents_Ultravox.ServerEvent, this._onServerEvent.bind(this, ep));
+    ep.on('dtmf', this._onDtmf.bind(this, ep));
   }
 
   async _startListening(cs, ep) {
@@ -189,7 +191,7 @@ class TaskLlmUltravox_S2S extends Task {
     /* note: the parent llm verb started the span, which is why this is necessary */
     await this.parent.performAction(this.results);
 
-    this._unregisterHandlers();
+    this._unregisterHandlers(ep);
   }
 
   async kill(cs) {
@@ -346,6 +348,18 @@ class TaskLlmUltravox_S2S extends Task {
       excludeEvents: this.excludeEvents
     }, 'TaskLlmUltravox_S2S:_populateEvents');
   }
+
+  _onDtmf(ep, evt) {
+    this.logger.info({evt}, 'TaskLlmUltravox_S2S:_onDtmf - DTMF received');
+    const {dtmf} = evt;
+    const data = {
+      type: 'user_text_message',
+      text: `DTMF received: ${dtmf}`,
+      urgency: 'immediate'
+    };
+    this._api(ep, [ep.uuid, ClientEvent, JSON.stringify(data)])
+      .catch((err) => this.logger.info({err, evt}, 'TaskLlmUltravox_S2S:_onDtmf - Error sending DTMF as text message'));
+  }
 }
 
 module.exports = TaskLlmUltravox_S2S;

lib/tasks/redirect.js

@@ -33,7 +33,7 @@ class TaskRedirect extends Task {
       }
       else {
         const baseUrl =  this.cs.application.requestor.baseUrl;
-        const newUrl = URL.parse(this.actionHook);
+        const newUrl = new URL(this.actionHook);
         const newBaseUrl = newUrl.protocol + '//' + newUrl.host;
         if (baseUrl != newBaseUrl) {
           try {

lib/tasks/say.js

@@ -1,6 +1,7 @@
 const assert = require('assert');
 const TtsTask = require('./tts-task');
 const {TaskName, TaskPreconditions} = require('../utils/constants');
+const {JAMBONES_SAY_CHUNK_SIZE} = require('../config');
 const pollySSMLSplit = require('polly-ssml-split');
 const { SpeechCredentialError, NonFatalTaskError } = require('../utils/error');
 const { sleepFor } = require('../utils/helpers');
@@ -31,7 +32,7 @@ const isMatchingEvent = (logger, filename, playbackId, evt) => {
 const breakLengthyTextIfNeeded = (logger, text) => {
   // As The text can be used for tts streaming, we need to break lengthy text into smaller chunks
 // HIGH_WATER_BUFFER_SIZE defined in tts-streaming-buffer.js
-  const chunkSize = 900;
+  const chunkSize = JAMBONES_SAY_CHUNK_SIZE;
   const isSSML = text.startsWith('<speak>');
   const options = {
     softLimit: 100,

lib/tasks/stt-task.js

@@ -203,26 +203,14 @@ class SttTask extends Task {
     if (cs.hasGlobalSttPunctuation && !this.data.recognizer.punctuation) {
       this.data.recognizer.punctuation = cs.globalSttPunctuation;
     }
-    if (this.vendor === 'gladia') {
-      const { api_key, region } = this.sttCredentials;
-      const {url} = await this.createGladiaLiveSession({
-        api_key, region,
-        model: this.data.recognizer.model || 'solaria-1',
-        options: this.data.recognizer.gladiaOptions || {}
-      });
-      const {host, pathname, search} = new URL(url);
-      this.sttCredentials.host = host;
-      this.sttCredentials.path = `${pathname}${search}`;
-    }
   }
 
 
-  async createGladiaLiveSession({
-    api_key,
-    region = 'us-west',
-    model = 'solaria-1',
-    options = {},
-  }) {
+  async createGladiaLiveSession() {
+    const { api_key, region = 'us-west' } = this.sttCredentials;
+    const model = this.data.recognizer.model || 'solaria-1';
+    const options = this.data.recognizer.gladiaOptions || {};
+
     const url = `https://api.gladia.io/v2/live?region=${region}`;
     const response = await fetch(url, {
       method: 'POST',
@@ -252,7 +240,9 @@ class SttTask extends Task {
 
     const data = await response.json();
     this.logger.debug({url: data.url}, 'Gladia Call registered');
-    return data;
+
+    const {host, pathname, search} = new URL(data.url);
+    return {host, path: `${pathname}${search}`};
   }
 
   addCustomEventListener(ep, event, handler) {
@@ -286,6 +276,7 @@ class SttTask extends Task {
         account_sid: cs.accountSid,
         alert_type: AlertType.STT_NOT_PROVISIONED,
         vendor,
+        label,
         target_sid: cs.callSid
       }).catch((err) => this.logger.info({err}, 'Error generating alert for no stt'));
       // the ASR might have fallback configuration, should not done task here.
@@ -486,6 +477,7 @@ class SttTask extends Task {
       message: 'STT failure reported by vendor',
       detail: evt.error,
       vendor: this.vendor,
+      label: this.label,
       target_sid: cs.callSid
     }).catch((err) => this.logger.info({err}, `Error generating alert for ${this.vendor} connection failure`));
   }
@@ -499,6 +491,7 @@ class SttTask extends Task {
       alert_type: AlertType.STT_FAILURE,
       message: `Failed connecting to ${this.vendor} speech recognizer: ${reason}`,
       vendor: this.vendor,
+      label: this.label,
       target_sid: cs.callSid
     }).catch((err) => this.logger.info({err}, `Error generating alert for ${this.vendor} connection failure`));
   }

lib/tasks/transcribe.js

@@ -459,6 +459,14 @@ class TaskTranscribe extends SttTask {
       else if (this.data.recognizer?.hints?.length > 0) {
         prompt = this.data.recognizer?.hints.join(', ');
       }
+    } else if (this.vendor === 'gladia') {
+      // gladia require unique url for each session
+      const {host, path} = await this.createGladiaLiveSession();
+      await ep.set({
+        GLADIA_SPEECH_HOST: host,
+        GLADIA_SPEECH_PATH: path,
+      })
+        .catch((err) => this.logger.info(err, 'Error setting channel variables'));
     }
 
     await ep.startTranscription({

lib/tasks/tts-task.js

@@ -274,6 +274,7 @@ class TtsTask extends Task {
           account_sid,
           alert_type: AlertType.TTS_NOT_PROVISIONED,
           vendor,
+          label,
           target_sid: cs.callSid
         }).catch((err) => this.logger.info({err}, 'Error generating alert for no tts'));
         throw new SpeechCredentialError('no provisioned speech credentials for TTS');
@@ -360,6 +361,7 @@ class TtsTask extends Task {
             account_sid: cs.accountSid,
             alert_type: AlertType.TTS_FAILURE,
             vendor,
+            label,
             detail: err.message,
             target_sid: cs.callSid
           }).catch((err) => this.logger.info({err}, 'Error generating alert for tts failure'));

lib/utils/amd-utils.js

@@ -405,19 +405,21 @@ module.exports = (logger) => {
     if (ep.amd) {
       vendor = ep.amd.vendor;
       ep.amd.stopAllTimers();
-
-      ep.removeListener(GoogleTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-      ep.removeListener(GoogleTranscriptionEvents.EndOfUtterance, ep.amd.EndOfUtteranceHandler);
-      ep.removeListener(AwsTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-      ep.removeListener(AzureTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-      ep.removeListener(AzureTranscriptionEvents.NoSpeechDetected, ep.amd.noSpeechHandler);
-      ep.removeListener(NuanceTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-      ep.removeListener(DeepgramTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-      ep.removeListener(SonioxTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-      ep.removeListener(IbmTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-      ep.removeListener(NvidiaTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-      ep.removeListener(JambonzTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
-
+      try {
+        ep.removeListener(GoogleTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+        ep.removeListener(GoogleTranscriptionEvents.EndOfUtterance, ep.amd.EndOfUtteranceHandler);
+        ep.removeListener(AwsTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+        ep.removeListener(AzureTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+        ep.removeListener(AzureTranscriptionEvents.NoSpeechDetected, ep.amd.noSpeechHandler);
+        ep.removeListener(NuanceTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+        ep.removeListener(DeepgramTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+        ep.removeListener(SonioxTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+        ep.removeListener(IbmTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+        ep.removeListener(NvidiaTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+        ep.removeListener(JambonzTranscriptionEvents.Transcription, ep.amd.transcriptionHandler);
+      } catch (error) {
+        logger.error('Unable to Remove AMD Listener', error);
+      }
       ep.amd = null;
     }
 

lib/utils/background-task-manager.js

@@ -135,26 +135,24 @@ class BackgroundTaskManager extends Emitter {
 
   // Initiate Record
   async _initRecord() {
-    if (this.cs.accountInfo.account.record_all_calls || this.cs.application.record_all_calls) {
-      if (!JAMBONZ_RECORD_WS_BASE_URL || !this.cs.accountInfo.account.bucket_credential) {
-        this.logger.error('_initRecord: invalid cfg - missing JAMBONZ_RECORD_WS_BASE_URL or bucket config');
-        return undefined;
-      }
-      const listenOpts = {
-        url: `${JAMBONZ_RECORD_WS_BASE_URL}/record/${this.cs.accountInfo.account.bucket_credential.vendor}`,
-        disableBidirectionalAudio: true,
-        mixType : 'stereo',
-        passDtmf: true
-      };
-      if (JAMBONZ_RECORD_WS_USERNAME && JAMBONZ_RECORD_WS_PASSWORD) {
-        listenOpts.wsAuth = {
-          username: JAMBONZ_RECORD_WS_USERNAME,
-          password: JAMBONZ_RECORD_WS_PASSWORD
-        };
-      }
-      this.logger.debug({listenOpts}, '_initRecord: enabling listen');
-      return await this._initListen({verb: 'listen', ...listenOpts}, 'jambonz-session-record', true, 'record');
+    if (!JAMBONZ_RECORD_WS_BASE_URL || !this.cs.accountInfo.account.bucket_credential) {
+      this.logger.error('_initRecord: invalid cfg - missing JAMBONZ_RECORD_WS_BASE_URL or bucket config');
+      return undefined;
     }
+    const listenOpts = {
+      url: `${JAMBONZ_RECORD_WS_BASE_URL}/record/${this.cs.accountInfo.account.bucket_credential.vendor}`,
+      disableBidirectionalAudio: true,
+      mixType : 'stereo',
+      passDtmf: true
+    };
+    if (JAMBONZ_RECORD_WS_USERNAME && JAMBONZ_RECORD_WS_PASSWORD) {
+      listenOpts.wsAuth = {
+        username: JAMBONZ_RECORD_WS_USERNAME,
+        password: JAMBONZ_RECORD_WS_PASSWORD
+      };
+    }
+    this.logger.debug({listenOpts}, '_initRecord: enabling listen');
+    return await this._initListen({verb: 'listen', ...listenOpts}, 'jambonz-session-record', true, 'record');
   }
 
   // Initiate Transcribe

lib/utils/sbc-pinger.js

@@ -100,6 +100,30 @@ module.exports = (logger) => {
   else if (K8S) {
     lifecycleEmitter.scaleIn = () => process.exit(0);
   }
+  else {
+    process.on('SIGUSR1', () => {
+      logger.info('received SIGUSR1: begin drying up calls for scale-in');
+      dryUpCalls = true;
+
+      const {srf} = require('../..');
+      const {writeSystemAlerts} = srf.locals;
+      if (writeSystemAlerts) {
+        const {SystemState, FEATURE_SERVER} = require('./constants');
+        writeSystemAlerts({
+          system_component: FEATURE_SERVER,
+          state : SystemState.GracefulShutdownInProgress,
+          fields : {
+            detail: `feature-server with process_id ${process.pid} shutdown in progress`,
+            host: srf.locals?.ipv4
+          }
+        });
+      }
+      pingProxies(srf);
+
+      // Note: in response to SIGUSR1 we start drying up but do not exit when calls reach zero.
+      // This is to allow external scripts that sent the signal to manage the lifecycle.
+    });
+  }
 
 
   async function pingProxies(srf) {

lib/utils/stt-latency-calculator.js

@@ -127,7 +127,6 @@ class SttLatencyCalculator extends Emitter {
 
   calculateLatency() {
     if (!this.isRunning) {
-      this.logger.debug('Latency calculator is not running, cannot calculate latency, returning default values');
       return null;
     }
 

lib/utils/transcription-utils.js

@@ -1085,13 +1085,6 @@ module.exports = (logger) => {
         ...(keyterms && keyterms.length > 0 && {DEEPGRAMFLUX_SPEECH_KEYTERMS: keyterms.join(',')}),
       };
     }
-    else if ('gladia' === vendor) {
-      const {host, path} = sttCredentials;
-      opts = {
-        GLADIA_SPEECH_HOST: host,
-        GLADIA_SPEECH_PATH: path,
-      };
-    }
     else if ('soniox' === vendor) {
       const {sonioxOptions = {}} = rOpts;
       const {storage = {}} = sonioxOptions;

lib/utils/tts-streaming-buffer.js

@@ -163,7 +163,6 @@ class TtsStreamingBuffer extends Emitter {
   }
 
   clear() {
-    this.logger.debug('TtsStreamingBuffer:clear');
     if (this._connectionStatus !== TtsStreamingConnectionStatus.Connected) return;
     clearTimeout(this.timer);
     this._api(this.ep, [this.ep.uuid, 'clear']).catch((err) =>
@@ -437,7 +436,15 @@ class TtsStreamingBuffer extends Emitter {
 
 const findSentenceBoundary = (text, limit) => {
   // Look for punctuation or double newline that signals sentence end.
-  const sentenceEndRegex = /[.!?](?=\s|$)|\n\n/g;
+  // Includes:
+  //   - ASCII: . ! ?
+  //   - Arabic: ؟ (question mark), ۔ (full stop)
+  //   - Japanese: 。 (full stop), ！, ？ (full-width exclamation/question)
+  //
+  // For languages that use spaces between sentences, we still require
+  // whitespace or end-of-string after the mark. For Japanese (no spaces),
+  // we treat the punctuation itself as a boundary regardless of following char.
+  const sentenceEndRegex = /[.!?؟۔](?=\s|$)|[。！？]|\n\n/g;
   let lastSentenceBoundary = -1;
   let match;
   while ((match = sentenceEndRegex.exec(text)) && match.index < limit) {

package.json

@@ -33,8 +33,8 @@
     "@jambonz/realtimedb-helpers": "^0.8.15",
     "@jambonz/speech-utils": "^0.2.26",
     "@jambonz/stats-collector": "^0.1.10",
-    "@jambonz/time-series": "^0.2.14",
-    "@jambonz/verb-specifications": "^0.0.122",
+    "@jambonz/time-series": "^0.2.15",
+    "@jambonz/verb-specifications": "^0.0.123",
     "@modelcontextprotocol/sdk": "^1.9.0",
     "@opentelemetry/api": "^1.8.0",
     "@opentelemetry/exporter-jaeger": "^1.23.0",