I have a situation where a service provider wants to connect two Cisco CallManager clusters to a SIP Trunking provider. One cluster is running 4.2 and the other is running 6.x. They have suggested we purchase an Acme Session Border Controller to talk H.323 with the CallManager clusters and SIP with them.
I was curious if anyone on this forum has ever tried anything like this. Are there any proprietary Cisco features in H.323 that may be a problem when talking to the Acme? Will an MTP be needed between the Cisco CallManager and the Acme?