We have a Standalone Gateway and CVP server. Inbound calls are sent to CVP server where the user can Zero out to customer service but the call transfer back through the gateway is not working.
Outbound Dial-Peer setup as follows:
dial-peer voice 801 pots
During troubleshooting I defined the Gateway in Call Manager and was able to make outbound calls using the dial-peer above from an IP Phone so I know the circuit is ok. Also, we can make CVP transfers work if we send the calls to CallManager via the gateway but the intent was not to rely on CallManager at all.