Hello,
We are having an issue with only certain numbers. The number is dialed then you hear maybe half a ring then silence. The calls stays connected but no audio and I see sender packets going out but no receiver packets. the calls flow is as follows. I spoke to my SIP Provider and they told me it's an issue with how cisco treats the 183 with SDP followed by a 180 with SDP. I tried blocking the 183 with sdp present then absent and nothing is working. Any help would be appreciated. Thanks.
Phone ==> CUCM ==>SIP==>CUBE==>PST SIP Trunk.
I have attached part of my cube config and the debug logs
