I did work this out. First, be sure to peer with Global Crossing's Acme Packet SBC not Sonus (issues with ACKs and 200 OK). We couldn't get it to work. You'll need to set up an Adaptation which can be found in the Routing section. You want to have something like:
Adaptation Module = <add>...
I am trying to configure a SIP trunk between Global Crossing and Session Manager without an SBC. The call sets up but dies 32 seconds in because Global Crossing never receives an ACK back from its 200 OK.
In my CM trace, I can see CM attempting to send the ACK back to Global Crossing but they...
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