send_silence_when_idle only after call is answered or bridged

lib/session/call-session.js

@@ -2814,14 +2814,15 @@ Duration=${duration} `
     }
   }
 
-  _configMsEndpoint() {
+  _configMsEndpoint(sendSilenceOnIdle = true) {
     this._enableInbandDtmfIfRequired(this.ep);
     this.ep.once('destroy', this._handleMediaTimeout.bind(this));
     const opts = {
       ...(this.onHoldMusic && {holdMusic: `shout://${this.onHoldMusic.replace(/^https?:\/\//, '')}`}),
       ...(JAMBONES_USE_FREESWITCH_TIMER_FD && {timer_name: 'timerfd'}),
       ...(JAMBONES_MEDIA_TIMEOUT_MS && {media_timeout: JAMBONES_MEDIA_TIMEOUT_MS}),
-      ...(JAMBONES_MEDIA_HOLD_TIMEOUT_MS && {media_hold_timeout: JAMBONES_MEDIA_HOLD_TIMEOUT_MS})
+      ...(JAMBONES_MEDIA_HOLD_TIMEOUT_MS && {media_hold_timeout: JAMBONES_MEDIA_HOLD_TIMEOUT_MS}),
+      ...(sendSilenceOnIdle && {send_silence_when_idle: -1})
     };
     if (Object.keys(opts).length > 0) {
       this.ep.set(opts);

lib/tasks/dial.js

@@ -748,6 +748,12 @@ class TaskDial extends Task {
       if (this.epOther) {
         this.epOther.api('uuid_break', this.epOther.uuid);
         this.epOther.bridge(sd.ep);
+
+        /**
+         * wait until the endpoints are bridged before apply the send_silence_when_idle
+         * audiocodes webrtc client somehow inserts massive latency if we send silence
+         * and then bridge A and B.
+         */
       }
       this.bridged = true;
     }
@@ -837,6 +843,9 @@ class TaskDial extends Task {
       this.timerMaxCallDuration = setTimeout(this._onMaxCallDuration.bind(this, cs), this.timeLimit * 1000);
     }
     sessionTracker.add(this.callSid, cs);
+
+    this.ep?.set({send_silence_when_idle: -1});
+
     this.dlg.on('destroy', () => {
       /* if our child is adulting, he's own his own now.. */
       if (this.dlg) {

lib/utils/place-outdial.js

@@ -138,7 +138,7 @@ class SingleDialer extends Emitter {
       this.serviceUrl = srf.locals.serviceUrl;
 
       this.ep = await ms.createEndpoint();
-      this._configMsEndpoint();
+      this._configMsEndpoint(false);
       this.logger.debug(`SingleDialer:exec - created endpoint ${this.ep.uuid}`);
 
       /**
@@ -339,12 +339,13 @@ class SingleDialer extends Emitter {
     }
   }
 
-  _configMsEndpoint() {
+  _configMsEndpoint(sendSilenceOnIdle = true) {
     const opts = {
       ...(this.onHoldMusic && {holdMusic: `shout://${this.onHoldMusic.replace(/^https?:\/\//, '')}`}),
       ...(JAMBONES_USE_FREESWITCH_TIMER_FD && {timer_name: 'timerfd'}),
       ...(JAMBONES_MEDIA_TIMEOUT_MS && {media_timeout: JAMBONES_MEDIA_TIMEOUT_MS}),
-      ...(JAMBONES_MEDIA_HOLD_TIMEOUT_MS && {media_hold_timeout: JAMBONES_MEDIA_HOLD_TIMEOUT_MS})
+      ...(JAMBONES_MEDIA_HOLD_TIMEOUT_MS && {media_hold_timeout: JAMBONES_MEDIA_HOLD_TIMEOUT_MS}),
+      ...(sendSilenceOnIdle && {send_silence_when_idle: -1})
     };
     if (Object.keys(opts).length > 0) {
       this.ep.set(opts);
@@ -495,7 +496,7 @@ class SingleDialer extends Emitter {
 
     this.logger.debug('SingleDialer:reAnchorMedia: re-anchoring media after partial media');
     this.ep = await this.ms.createEndpoint({remoteSdp: this.dlg.remote.sdp});
-    this._configMsEndpoint();
+    this._configMsEndpoint(false);
     await this.dlg.modify(this.ep.local.sdp, {
       headers: {
         'X-Reason': 'anchor-media'