JavaScript SDK mute/unmute agent mic during active call

General Discussion
1

Need some help troubleshooting the client SDK methods for muting an agent’s microphone mid-call. I’m using session.mute() but the audio doesn’t actually cut on the remote side. I’m getting a silent failure with no console errors. Is there a specific state check I’m missing before calling the method? I’ve verified the connectionState is Connected. The call logs show the event firing, but the peer stays unmuted. Any ideas on what I’m overlooking here?

2

It depends, but generally… the mute() method on the session object only controls the local audio stream direction, not the signaling state the other party receives. You need to explicitly update the connection’s media properties via the platform client’s call control manager to ensure the remote side acknowledges the mute state.

import { platformClient } from '@genesyscloud/genesyscloud';

async function toggleRemoteMute(connectionId, isMuted) {
 try {
 // Ensure we have an active call control session
 const callControl = platformClient.CallcontrolApi;
 
 // The key is updating the connection's media state directly
 // This triggers the proper SIP re-INVITE or WebSocket update to the peer
 await callControl.patchConnection(connectionId, {
 body: {
 media: {
 audio: {
 mute: isMuted // true for muted, false for unmuted
 }
 }
 }
 });
 
 console.log(`Remote mute state updated to: ${isMuted}`);
 } catch (error) {
 console.error('Failed to update mute state:', error);
 // Check for 409 Conflict if the call state isn't actually 'connected'
 if (error.status === 409) {
 console.warn('Call state may not support media updates');
 }
 }
}

You’ll also want to listen for the connectionUpdate event on the WebSocket to confirm the remote state actually flipped, since network latency can sometimes delay the visual indicator on the other end.

3

Make sure you’re actually calling the specific method on the correct object instance, not just a generic session helper that might be stale.

The previous answer points in the right direction, but you need to hit the connection’s media controls directly to update the remote signaling state properly.