desiredeabn Posted February 9 Report Share Posted February 9 Hello, Currently we have an issue where when people are calling inbound to a user that is using iOS the called party is unable to hear them. However this happens randomly. Has anyone else run into this issue, and if so. What was the fix? Quote Link to comment Share on other sites More sharing options...
RichardDCG Posted February 11 Report Share Posted February 11 codec mismatch? See if you can get a PCAP of it... we have had issues where both PCMA and PCMU are used in the call and audio is broken. Quote Link to comment Share on other sites More sharing options...
jvoiptel Posted February 13 Report Share Posted February 13 I would check out this Vodia doc for helpful tips: https://doc.vodia.com/docs/one-way-audio-1 Try narrowing it down. Is it random with any originating caller or same one? Can you obtain SIP traces with your carrier? Try enabling PCAP tracing as suggested although it will be difficult without being able to reproduce it. Quote Link to comment Share on other sites More sharing options...
desiredeabn Posted February 15 Author Report Share Posted February 15 So I was able to get a PCAP of a call that had the issue. It is random, a person can call in once and no audio then call in 2 minutes later and it works fine. However we did notice that it isn't only calls from the sip trunk, it also happens on calls that originate from calls within the system. Quote Link to comment Share on other sites More sharing options...
Vernon Posted February 16 Report Share Posted February 16 18 hours ago, desiredeabn said: it also happens on calls that originate from calls within the system I'm not sure if that's app related as i don't use it, but normally if you have audio issues internally (extension to extension), then the likely culprit is something on the network. Either a firewall, or bad WiFi device dropping packets...etc You can try to register two softphones on a desktop, or try to use the web client of the PBX and see if you can re-create the error in different environments. One inside the office where you know it happens, one from a home office with different networking equipment. But if this ONLY happens on the iOS app then that would be harder to troubleshoot. Quote Link to comment Share on other sites More sharing options...
desiredeabn Posted February 16 Author Report Share Posted February 16 Hi Vernon, Unfortunately it only happens to the iOS app. I have restricted the codec's to just the OPUS codec as RichardDCG suggested it may be a problem with the PCMA PCMU codecs. We'll see how it goes. Quote Link to comment Share on other sites More sharing options...
desiredeabn Posted March 4 Author Report Share Posted March 4 Just to follow up with everyone, I *think* we have resolved the issue. I originally had restricted calls to the OPUS code for the iPhone users but this would cause issues with some other calls with no audio in either direction. The fix (that worked for us so far) was to adjust the audio codec to this order of preference: OPUS G.711U G.711A So far over the last two weeks we have not had a single inbound call without audio for anyone running an iPhone, however this caused some issues for outbound audio for Android users so we have manually adjusted on the extension settings where needed so we ran the codecs for them in this order and that fixed the issue. G.711U G.711A OPUS Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted March 5 Report Share Posted March 5 We want to use OPUS for the mobile users because it just sounds better, especially when there is a lot of packet loss. But G711 is still the predominant reality in the world of SIP trunks. I. would say if it works, keep it on G711 but true happiness will require that we have OPUS on mobile devices. In any way, I would try to keep a PCAP for analysis reasons to see why there was one way audio. Quote Link to comment Share on other sites More sharing options...
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