[cisco-voip] Unity connect 8.5 / UCM 8.5 Sip intergration

[Mike Lydick]

We are seeing an issue where when call are are transfered from our Unity to
Verizon SIP trunk calls will fail. Call that get transfered back to Verizon
will require a diversion header that contains a authorized ANI and from our
CUBE IP address. We have this working with calls to IP phones that transfer
back to the PSTN. Unity is not providing a Diversion header. Has anyone else
run up against this issues and resolved?

Call flow

PSTN(Verizon SIP) --> CUBE(SIP) -->UCM 8.5(SIP) -->UCX8.5 (Xfer to PSTN)
-->UCM 8.5(SIP) --> PSTN(Verizon SIP)

Best Regards,

Mike Lydick
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