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Integration with PBX


I am going to be expanding my voip deployment to replace an existing Meridian system. We will be doing this on a floor by floor basis and in during the transition we need to retain the ability to dial between the floors. Im looking to find the easiest way to connect to the current PBX and allow calls to pass between the two systems. Each has their own PSTN access and their own voicemail. This is simply to make calls between the floors without having to dial the whole 212xxxxxxx number.


Re: Integration with PBX

We used T1 PRIs to route calls between Call Manager and our 61 and 81C PBXs. As Nortel phones were replaced they were outed and the number routed in the PBX individually. On the Call Manager side there was a route pattern covering the whole range pointing at the PBX route list. The Call Manager will route to an internal phone DN before the route pattern so it worked fine.

We used NI2 for the ISDN switchtype which works very well as long as you don't need to route PSTN calls from the Call Manager side through the PBX.

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