Foreign calls only are dropped after 15 minutes

[AWS2P]

Hi ,
on Latest V16, on cloud OVH hosted PBX, with supported trunk OpenIP, customer indicate foreign calls are dropped after 15 minutes.

Other calls from France to France are not dropped after 15 minutes. some example here today, first call at 9:30 call dropped after 14min58 sec, then second call restart at 9:45 ending normally after 13 minutes 22 sec


For now , case have got log on 3CX is a call from South Africa , this same number call regularly but it's dropped each time in nearly same second.
Other days exemple:

I have compared trunk sip settings with other pbx using same provider with no visible difference.
Have been in contact with OpenIP support but they see nothing strange except perhaps at the end of the call an ack not sure to be received .

Customer also noticed same behavior with luxembourg calls, so trivialy common point is foreign calls (but perhaps it's not relevant)

 

[YiannisH_3CX]

Hi @aws2p

Since local calls are not failing then I suspect its an issue with the upstream provider OpenIP uses for international calls but they should be able to clarify. Perhaps there is a session expires timer between the 2.
What you can do from your side is run a capture on one of these calls and see which side is dropping the call and see where the issue comes from. That should point you in the right direction on where to look next.

 

[AWS2P]

Hello Yiannis,
thanks for answer, trace is already what I wanted to do and as next scheduled call is on monday afternoon, so I 'll try to capture it from pbx side.

After that I'll need your expertise in packet to find who's faulty

 

[YiannisH_3CX]

We will be glad to assist.

 

[Evolute IT]

Hello Yiannis,
thanks for answer, trace is already what I wanted to do and as next scheduled call is on monday afternoon, so I 'll try to capture it from pbx side.

After that I'll need your expertise in packet to find who's faulty

Let me know if you need help too.

I'm kinda used to work with packet captures lol (working with Grandstream phones is a delight, isn't it...)

 

[AWS2P]

Merci Fred , je te ferai suivre le fichier si besoin, merci pour ta proposition

 

[CloudAware]

Hi aws2p. This is a common issue and it is caused by the sip sessiontimer. https://meeting-infohub.cisco.com/f...alls-drop-after-a-certain-period-of-time.html

Please check your phone for the session-timer settings.