Over Compressed audio, low volume

[vectra]

Hi Guys, this weird issue started a few days ago and I still can not resolve it so looking for help. I'm running instance in google cloud and I'm using Telnyx SIP trunk. A few days ago all calls seems to be overcompressed with low volume or no audio in both ways. If calls coming form Telnyx network no issues at all or calls ext to ext. I added second SIP trunk with a different provider and those calls are great. Since in V20 we can monitor a quality of calls, we are not seeing any drop packets or similar. All calls graded excellent but still you can hear it those issues. I try to enable uncoditional call forwarding from Telnyx portal to a different number on a different carrier but still had same over compressed audio. I have more then 100 instances on google using same SIP trunk provider and all of them working fine. VM instance has enough resources so I can not find a reason for this degradation. I also try to use a different codec but no luck, Any ideas?

 

[OlegR_3CX]

Hi there.
So if you call between the user in the 3CX when making an internal call, do you face the same issue?

 

[ivank]

@vectra If you reproduce on verbose and send support info as PM(with a sample recording), I'll try to figure out what could be wrong later tonight.

 

[vectra]

NO, internal calls are perfect or calls coming from Telnyx network. Calls coming form other SIP provider also great. Just calls coming from other carrier experiencing issues.

 

[vectra]

@vectra If you reproduce on verbose and send support info as PM(with a sample recording), I'll try to figure out what could be wrong later tonight.

Hi Ivan, you will find a couple of examples. I'm calling form 7738950780 number and you will hear audio degradated call. Then call different trunk on same system and call is perfect. Then call from 7732506919 (different carrier) also bad call. Then form 3128830023 (Telnyx) perfect call. So it looks like issue when calls coming from other carrier to Telnyx.

 

[vectra]

Sample of recording

 

[ivank]

I need PBX side logs in verbose mode to be able to say anything

 

[vectra]

Support file it too big to upload. Can I copy some logs from there?

 

[ivank]

Yes. Media Server and Tunnel logs, + .blrec & .bldef. Send them as private message please, not as reply in this thread.

 

[vectra]

Here we go