Hello everyone. I wanted to see if its possible to do PBX voice channels over MPLS? My current situation is that we and a T1 and do data over one channel-group and PBX voice over another. We want to move to an MPLS, but I dont know if we can do that with what we have. Our voice system doesnt support voip of any kind. Any help would be appreciated.
If I understand your case correctly, what you can do, is to use a dual T1 VWIC in the router. One port goes to telco with said integrated T1 service, the other goes to PBX with a voice-only T1. When certain numbers are called, the call goes VoIP to other PBXs. All other numbers are sent unchanged to telco. This way router is transparent to PBX and everything works easily.
However if you want nice features for the PBX links you should use T1 with ISDN PRI instead of CAS. Since many PBX vendors do charge to activate ISDN, at some point it becomes convenient to decommission the PBX altogether adn place IP phones to be controlled by the router (CCME), that does all what the PBX does and more.