We have 3 CUCM servers, two sub and one pub at two different physical locations.
There are two SIP trunk servers (non Cisco), we wish to have the CUCM at the same physical location to communicate with the SIP trunk device at its location, instead of going over the WAN to communicate with the other one.
Communications are initiated from the CUCM side through a route pattern that points to a RL/RG that contains the SIP trunk.
The SIP trunk uses a DP that uses a CUCM group that only contains the local CUCM server.
Can this be setup to reliably control which CUCM server talks to the SIP trunk server at its location?
Do we need to configure something differently?
There other factors that determing the originating node from which a call will proceed. ie the cucm server that willbe used. These fatcors include:
the node the phone making the call is registered to, run on all active node is selected or not and the the cucm group on the RL. Please refer to the link below to know how cucm chooses which server it uses for a call over a sip trunk..