Unable to perform call transfer or call park for an outbound call via SIP Trunk (SKYPE)

lingchiawee · ‎06-26-2013

We have configured the SIP Trunk & SIP profile and successfull make outbound call through SIP Trunk (SKYPE). However, we are not able to perform call transfer or call park when the call is connected.

The scenario is:

A call to an phone number via SIP trunk, when call established, A perform call-transfer to B. After the call-transfer, the call Drop and Phone B show error code "Temp Fail"

When i select "enable MTP" in SIP trunk, we are able to call transfer and call park. But it limit the number of call session to 1.

Tommer Catlin · ‎06-28-2013

You are probably running into some sort of Codec issue. IE, your phone is G.711 and the trunk is G.729. You will need to transcode the call at somepoint.