Audio drops after 10-20 seconds

[obaid@dymentions]

My Setup
Cloud hosted 3cx on Amazon LightSail
Product: Professional
Version: 18.0 (update 3) Build 461
Extensions: 10
using ring group and call queue

Issue: Audio is dropping in both external and internal ext to ext calls.
after checking all settings and logs, i was curious to know about the following lines or errors which i capture during call or echo test.

04:28:50.561|7fdd49ffb700| Info|MSEndPoint.cpp(3077): 10:[MS210000] C:8.1:Offer received. RTP connection: 192.168.100.68:10000(10001)
04:28:50.563|7fdd49ffb700| Info|MSEndPoint.cpp(1876): 10: C:8.2 SDP_NATIVE
04:28:50.563|7fdd49ffb700| Info|MSEndPoint.cpp(2198): 10:[MS210002] C:8.2:Offer provided. Connection(transcoding mode): 127.0.0.1:7018(7019)
04:28:50.667|7fdd49ffb700| Info|MSEndPoint.cpp(2694): 11:[MS211000] C:8.2: 127.0.0.1:12010 offers ONLY telephone-event/8000. In-Band DTMF tone detection is turned off for this call segment
04:28:50.668|7fdd49ffb700| Info|MSEndPoint.cpp(3082): 10:[MS210001] C:8.2:Answer received. RTP connection[unsecure]: 127.0.0.1:12010(12011)
04:28:50.668|7fdd49ffb700| Info|MSEndPoint.cpp(1876): 10: C:8.1 SDP_NATIVE
04:28:50.668|7fdd49ffb700| Info|MSEndPoint.cpp(2203): 10:[MS210003] C:8.1:Answer provided. Connection(transcoding mode[unsecure]):127.1.2.3:22(23)
04:29:07.473|7fdd51ffb700| Warn|RTPReceiver.cpp(191): 5:RTPReceiver[0]:RTP receiver for [email protected]:5482(C:8.1) has no assigned socket
04:29:07.473|7fdd51ffb700| Warn|RTPReceiver.cpp(191): 5:RTPReceiver[0]:RTCP receiver for [email protected]:5482(C:8.1) has no assigned socket
04:29:07.473|7fdd4b7fe700| Warn|RTPReceiver.cpp(450): 5:MediaProxy:VRTP receiver for [email protected]:5482(C:8.2) has no assigned socket
04:29:07.473|7fdd4b7fe700| Warn|RTPReceiver.cpp(450): 5:MediaProxy:VRTCP receiver for [email protected]:5482(C:8.2) has no assigned socket
04:29:07.473|7fdd4b7fe700| Warn|RTPReceiver.cpp(450): 5:MediaProxy:T38 receiver for [email protected]:5482(C:8.2) has no assigned socket
04:29:07.473|7fdd4b7fe700| Warn|RTPReceiver.cpp(450): 5:MediaProxy:T38_ receiver for [email protected]:5482(C:8.2) has no assigned socket


Can anyone help me in this please.

 

[Gino Conte]

Just to throw in we are also having these issues our setup is as follows

3CX hosted on Azure with Gamma providing the sip trunk

See attached for Gamma update and 3CX logs

 

[Spire-Jon]

Please note that our support department is looking into this but from the information we have gathered so far is that we are not getting replies to our Invite messages for outbound calls (we don't have files for inbound calls yet).
We have also not made any changes or updates to any of our systems recently so its strange that the issue started suddenly. Another indication we have is that all affected systems are cloud based so Gammas IPs might have been blacklisted somewhere or there is general issue that is affecting some IPs.

I have just had a call with a SIP channel manager at Gamma who has provided a lot of useful information from their side. I'm not sure if you're aware but this may help you? Apologies if not but information below:

Inbound calls are not replying to the INVITE packets sent by Gamma resulting in a 504 response.

Outbound calls are connecting but a CANCEL packet is being sent immediately after the INVITE packet from the PBX.

I have wireshark analysis from multiple end-points from Gamma's end and happy to provide these on a support ticket if you need them.

 

[DavidHodgson]

So other than the one AWS report, is everyone else using Azure to host their systems.

We don't have this on any self-hosted or OVH systems.

Is the issue Azure?

 

[Acro-Kenny]

Has anyone got any further with this one? Gamma have closed my ticket citing Azure as the reason (commonality between all issues raised)

 

[Spire-Jon]

Has anyone got any further with this one? Gamma have closed my ticket citing Azure as the reason (commonality between all issues raised)

Azure have confirmed that they've been having issues today. You can find further updates from their status page.

 

[YiannisH_3CX]

I have just had a call with a SIP channel manager at Gamma who has provided a lot of useful information from their side. I'm not sure if you're aware but this may help you? Apologies if not but information below:

Inbound calls are not replying to the INVITE packets sent by Gamma resulting in a 504 response.

Outbound calls are connecting but a CANCEL packet is being sent immediately after the INVITE packet from the PBX.

I have wireshark analysis from multiple end-points from Gamma's end and happy to provide these on a support ticket if you need them.

That is interesting because we have captures showing that Invites are sent and we get no reply. So it looks like the issue is somewhere in the middle. We are waiting for more files to make sure so any information you can share will help.

 

[Acro-Kenny]

Our systems seem to be functioning correctly this morning. Azure Firewall issue seems to have been rectified.

 

[YiannisH_3CX]

That is good to see. Hopefully others have the same luck as you do.

 

[obaid@dymentions]

That is good to see. Hopefully others have the same luck as you do.

what about me
i am not using azure nor gamma
just test my system now and the issue is still there

 

[DavidHodgson]

what about me
i am not using azure nor gamma
just test my system now and the issue is still there

Sorry we hijacked your post assuming it was all related.

Have you checked that you have all the necessary ports open in any firewall within AWS, paying attention to RTP ports?

 

[obaid@dymentions]

Sorry we hijacked your post assuming it was all related.

Have you checked that you have all the necessary ports open in any firewall within AWS, paying attention to RTP ports?

yes i have checked that
firewall check test is showing pass for all ports used by my 3cx