[OpenSIPS-Users] MS Teams REFER transfer on hold.

[Slava Bendersky]

Hello Everyone, 
I am trying put tougher transfer feature with in MS Teams. 
And based on my research and testing right now is not possible with opensips. 
MS Teams are sending on hold in case of transfer and onhold as a=inactive. 
Major problem they require encode/decode params in REFER-TO REFER-BY. 

MS Teams expect observe REFER with 202 and decode params with future action. 

Here official requirements doc. 
[ https://docs.microsoft.com/en-us/microsoftteams/direct-routing-protocols-sip#call-transfer | https://docs.microsoft.com/en-us/microsoftteams/direct-routing-protocols-sip#call-transfer ] 

Any suggestion welcome. 

volga629. 


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