I am trying to integrate a third-party IP PBX with CallManager 3.3.3 (which is also planned to be upgraded to version 4.X). It seems that the H.323 version that the third-party vendor i using H.323 version 2. Is Cisco using H.323 Version 1.0 ? If so ...

We have a remote branch that still uses a 3Com PBX ( NBX 100) and 3Com ConneXtions H323 Gateway. As they would like to keep the NBX 100, we have no choice but to integrate it to our CallManager. 1) How do I communicate the third-party 3Com H323 Gatew...

Has anybody used the SIP Trunk functionality of the latest CCM 4.X ?And has somebody integrated a third party SIP Proxy serverwith the CallManager 4.X using a SIP trunk ? Canyou pleae advise me on how to do the integration using the SIP Trunk ?Thanks

Has someone tried to upgrade Unity from 4.0(3) to 4.0(4) version ? I don't know if my DVD has some issues but once I upgraded to 4.0(4) Unity would not start. One thing that also caught my attention is that whenI ran Permissions Wizard from the Exe f...