Audio dropping off 1 way around the 15 min mark since update

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Hi all

I've got a system running 18 U8 B917 as of last Friday.

We have had complaints that calls initiated by the QCB feature are having issues where the callee audio drops out.

Is this anything anyone else is experiencing?

We're using an unsupported SIP trunk but has been fine pre this update.

 

[YiannisH_3CX]

I would suggest a packet capture in this instance. Since the call is established and there is audio you will need to capture the call to see what is causing the audio cut off.
The 15 minute mark is suspicious as if there is a session timer the renewal might take place at the 15 minute mark. If the renewal is via a Re-Invite then that might change the audio properties breaking the audio. Just a theory anyway.