Teams rejects call with error 422

Occasional Contributor

Hi all,

 

I'm having some trouble with calling from a Swyx pbx to Microsoft Teams direct routing. 

 

When I place a call from Swyx pbx to Teams, the call get's denied. When I checked the logs I noticed the following:

422 Session Interval Too Small error

 

Teams is rejecting the call because Swyx is sending a 90 sconds field in the Session Expires Header. 

I searched the web for adjusting the allow Session Expire field in Teams but can't find anything.

 

According to this document:

https://datatracker.ietf.org/doc/html/rfc4028

 

The rule is to have at least a 90 seconds Header. So Swyx does nothing wrong with that.

Can anybody help me with this? Or point me in a good direction.

 

Thanks!

 

1 Reply

Hi @dvermeulen  If you don't get a timely response from this community, you might want to open a ticket at answers.microsoft.com tech support, where authorized MSFT agents can troubleshoot an issue until it's resolved.