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Audio issues in the start of calls

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  • 1.  Audio issues in the start of calls

    Posted 06-25-2025 02:46
    No replies, thread closed.

    Hi! 

    Since we went live with Genesys Cloud back in Feb of 2025, we have experienced intermittent audio issues at the start of some calls. 

    The issue, simply put, is that the agents are not able to hear any audio from Genesys, resulting in them hanging up the call and calling the customer back.

    We've spoken to support but since they see call-media from both parties in Genesys, we didn't get much help further. 

    Has anyone else experienced this, and if so, how did you solve it? 


    #Telephony

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    David Resch
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  • 2.  RE: Audio issues in the start of calls

    Posted 06-25-2025 07:34
    No replies, thread closed.

    Hello David, 

    Just curious have you also checked with your SBC/Carrier as well? One way audio especially intermittent is very difficult to pin down and could be a number of issues. Ranging from headphones, network to SBC/Carrier. 

    Cheers, 



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    Cameron
    Online Community Manager/Moderator
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  • 3.  RE: Audio issues in the start of calls

    Posted 06-25-2025 07:50
    No replies, thread closed.

    Hi! 

    Yes we have checked with them, and they are not seeing any problems either. 

    The odd thing is that in the recordings, there is audio from both agent/customer but the audio does not go to the agents headset. 

    This leads me to think it's headset related, but having a very hard time pinpointing it. 



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    David Resch
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  • 4.  RE: Audio issues in the start of calls

    Posted 06-26-2025 01:11
    No replies, thread closed.

    Hi David,

    Have you set your WebRTC phones to use a persistent connection?

    We have had a similar problem at one site and found that it can take up to 8 seconds (usually much less) for the audio to be established to some headsets. Persistent connection keeps the connection open between calls, but it doesn't overcome the problem at the first call, or if the persistence timer expires. 

    You might also check your network performance where the agents are.



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    Richard Presling
    CX Implementation Engineer
    New Zealand / Australia
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  • 5.  RE: Audio issues in the start of calls

    Posted 06-26-2025 02:36
    No replies, thread closed.

    We activated the persistent connection this morning, so hopefully this will help some! 



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    David Resch
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  • 6.  RE: Audio issues in the start of calls

    Posted 06-26-2025 10:17
    No replies, thread closed.

    Are your agents also running any other collaboration-type applications that use the headsets?  We have found that Zoom and occasionally Teams will sometimes fight with Genesys over control of the headset resulting in loss of audio either one way or both ways at the headset.  Also, depending on your headset make/model, there might be firmware updates from the manufacturer that can be applied that might help.



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    Patrick Jones
    NA
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  • 7.  RE: Audio issues in the start of calls

    Posted 06-26-2025 02:33
    Edited by Peter Sandor 06-26-2025 02:54
    No replies, thread closed.

    Hi David,

    please use the "flag" feature for tagging such calls, so GC support can check them. Feel free to raise cases with them until resolved. Unfortunately their help page does not have any easy to use checklist, there are pages, sections, not easy to sift through, you need to compile your own checklist of OS + sound + headset + power saving + webbrowser settings.

    Also be aware of USB splitters / hubs, UUID of connected devices when changing ports, UUID changes, impacts OS settings when  connected to "other" port.

    Cheers



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    Peter Sandor
    Contact Center Senior System Engineer
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  • 8.  RE: Audio issues in the start of calls

    Posted 06-26-2025 02:36
    No replies, thread closed.

    Thank you for the tip, I will keep that in mind if we raise the case again, the issue is that all audio is present in the system, so they had a hard time seeing any issues. 



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    David Resch
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  • 9.  RE: Audio issues in the start of calls

    Posted 06-26-2025 02:49
    Edited by Peter Sandor 06-26-2025 02:50
    No replies, thread closed.

    also be carefull with persistent webrtc connection, it means constant mic on, likely GDPR / union agreements breaking topics



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    Peter Sandor
    Contact Center Senior System Engineer
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  • 10.  RE: Audio issues in the start of calls

    Posted 06-26-2025 02:52
    No replies, thread closed.

    In what way is it "constant on"? Does this mean it's recording at all times or just active and picking up sound? 



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    David Resch
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  • 11.  RE: Audio issues in the start of calls

    Posted 06-26-2025 02:54
    No replies, thread closed.

    persisten webrtc has the mic always on, constant listening to surroundings



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    Peter Sandor
    Contact Center Senior System Engineer
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  • 12.  RE: Audio issues in the start of calls

    Posted 06-26-2025 14:37
    No replies, thread closed.

    We see this issue randomly as well. We use the Genesys desktop app and have Persistent Connection enabled for all our WebRTC phones. We've been having agents call their voicemail after logging in to initiate the connection. This seems to help sometimes. Some users find that logging out of the app and logging back in helps. Have opened tickets with our vendor but no permanent fix has been found.



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    Steph Voelker
    Systems Administrator
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  • 13.  RE: Audio issues in the start of calls

    Posted 06-27-2025 07:12
    No replies, thread closed.

    Update: 

    We have had persistent connection on for the past 24 hours and have gone from 60-75 reports per day down to 2 yesterday! 

    Followup question from my end, is there any clear drawback to setting the timeout time for the connection to say, 5 hours? 



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    David Resch
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  • 14.  RE: Audio issues in the start of calls
    Best Answer

    Posted 06-27-2025 07:19
    Edited by Jason Kleitz 08-04-2025 13:20
    No replies, thread closed.

    We experienced similar thing with a customer. Bottom line is the customer has ZScaler in front of on-prem edges, it has its "restrictive" rules and may be negatively impacting webrtc streams erstablishing = network / security topics. Persistent webrtc has been strongly declined by customer's IT, due to gdpr / IT / union things - constrant mic on. So I can only recommend you focus on your network & security architecture, troubleshoot its performance, bottlenecks, vpn sw, firewalls, loadblancers, ISP providers,  etc whatever might be disrupting webrtc sessions or making their establishing take extra long



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    Peter Sandor
    Contact Center Senior System Engineer
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