Forum Discussion
Cannot resume/end pstn call that has been placed on hold?
I managed to resolve this issue by working with the SIP carrier, they hadn't approved Teams on their trunks so we had to start from scratch and now have a working config.
On our Audiocodes SBC I have the SIP Trunk IP profile set a specific way for hold and retrieve, see attached screenshot.
There is still a time delay when resuming a call but this is an MS issue that they are aware of.
Alex_Dunlop - When trying to resume the call or end the call what happens? Does the client not let you perform the action. Are you seeing any behavior in the SBC logs whilst attempting these actions (it should attempt to do a REFER etc.)
Lee Ford thanks for the response.
When trying to resume the call you cant, if you click resume nothing happens and a little popup just shows regarding the audio device.
From looking at the SBC log I can see we get many 481 Call Leg/Transaction Does Not Exist messages between the client and MS.
However doing the same trace with a mobile client and performing the hold and resume we dont see any 481 messages.
I'm going to perform a more detailed trace and see if anything else shows up.
Alex