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 Here's an example call and syslog from the audiocodes. It seems like when the client places the call on hold its almost as though the original call then ends, (i see a bye message) then when you try to retrieve that call off hold there is a 481 Call/Transaction Doesn't exist message.