Cisco Meeting Server, A call from WebRTC(internet) fail

[jiramath.nexentel]

I have a new installation site which deploy the single split solution

The problem is that the client from internet(outside firewall) call to the space, the call connected but no video and audio, then a few second later call is disconnected itself, this problem happened with both webRTC and CMA.

Hence, the call from inside clients has no problem

Please help me solve the problem

[Jaime Valencia]

What versions are  being used??

What troubleshooting has been done??

[jiramath.nexentel]

Hi Jaime

At the web client diagnostics, I think Turn server has been chosen correctly, 27.254.182.149 is the public IP of Turn server

TURN configuration debug
 Ever signalled by core: yes
 Valid: yes
 Num TURN servers: 1
 00. GUID: b77299e7-1441-4140-8427-ce4789edf91d
 address: 27.254.182.149
 server address: 10.104.5.176
 port: 3478
 Chosen: no
Chooser 7F25E80969A0
last processed 5496ms ago
bestLastSignalled 00000000-0000-0000-0000-000000000000
never signalled chosen
Turn chooser debug
Num DNS states:1
00. b77299e7-1441-4140-8427-ce4789edf91d
 turn : 1
 ms-edge : 0
 acano : 1
 hostname : 27.254.182.149
 port : 3478
Num TURN servers monitored:1
00. 27.254.182.149:3478 
 reachable: 0 
 STUN response : never received
Chooser 7F25E8097120
last processed 5495ms ago
bestLastSignalled 00000000-0000-0000-0000-000000000000
never signalled chosen
Turn chooser debug
Num DNS states:1
00. b77299e7-1441-4140-8427-ce4789edf91d
 turn : 1
 ms-edge : 0
 acano : 1
 hostname : 10.104.5.176
 port : 3478
Num TURN servers monitored:1
00. 10.104.5.176:3478 
 reachable: 0 
 STUN response : never received

I also capture traffic at the web client and compare the log with the working one(in my lab). I saw the difference in STUN protocol, something seem to be missing on the non-working one.

[silverfank]

Is it works now? if so, can you share how to fix it?

[jiramath.nexentel]

Finally i found it, that was the firewall issue.

The RTP flow in my deployment is strange

[silverfank]

And how many CMS did you use? core and edge or only one?