I have a Central Site with a Cisco Unified Communications Manager cluster set up and running with about 80-100 IP phones. There is a Voice Gateway in the Central Site which is connected to PSTN through an E1 line (see topology2.jpg). There is a Branch Office which is connected to the same MPLS cloud as the Central Site and traffic between them is working fine, we also got QoS configured for the WAN.
We need to place VoIP calls between the Central Site and this Branch Office, so in the CallManager I have created route patterns for the Branch extensions and also configured dial-peers on both the Central Site Voice Gateway and Branch Office MPLS gateway.
In calls made from the Central Site to Branch extensions, I get a message from the telco saying that "this number doesn't exist" so the call is being routed to the PSTN instead of the MPLS cloud (please check my confs attached). If I try to call from the Branch to any extension in the Central Site, I get a busy tone.
I'm pretty sure I'm missing something simple here so I wonder if anyone can give me a hint. I've attached the Branch MPLS gateway's dial-peers and also the Central Site Voice Gateway dial-peer confs, if you guys need any other information just let me know.
Thanks in advice!
A couple things jump right out -
First there is no need for you to send the calls to the central gateway and then have it send them to the remote gateway. Add the remote gateway to the CCM, set up a route group and route list for it and send the calls directly. The way you have it now the central gateway would need to be a CUBE, and that is not really needed here at all.
Second, make sure you have an H323 bind command to the interface with IP address 192.168.1.254 on the remote gateway so that the correct address is presented incoming calls from the gateway - also change your remote dial-peers so they go directly to CCM