SOLVED

Outgoing calls from teams dropped

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Occasional Contributor

All outgoing calls are being dropped after about 10 seconds of silence with Q.850 ;cause=22 being returned to the SBC and the following error displayed to the user:

MicrosoftTeams-image (19).png

It only happens in one of our offices if the same account logs into a machine in a different office it's fine and it never occurs on the WebClient only the desktop client.

 

Anyone seen this before?  

1 Reply
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Best Response confirmed by Dan____ (Occasional Contributor)
Solution

In case anyone comes across this post in future, it turned out to be a firewall issue whereby one of the MSFT servers was blocked, but this did not affect the regular Teams usage at all only PSTN it also didn't effect the Teams web client