T23G no audio on 10% of calls

[ivan_aer]

Hi all

We recently received some new T23-G handsets. We have been using T22's in our office for a while without issues. We set up the T23's with the same config setup on the same network.

Around 1 in 10 calls to the T23 phones have no audio on either end. The rest of the time audio is fine, no delay or problems with audio quality. I have updates the firmware to the latest version - 44.80.0.95. Are there any known issues relating to audio dropping infrequently?

I have attached syslog and pcap from one of the calls which had no audio.

Thanks!