Can comebody tell me what service controlls H.323 in CallManager 7.x? Is it the CallManager service?

I have a few phones that occasionally exhibit the following symptom.An assistant answers a call. She goes to place the call on hold and no softkeys are present and thus she is unable to place the call on hold.We recently upgraded from 3.3(5) to 4.1(...

We are running CCM 3.35, with approximately 2000 phones. The last three times that we have performed phone load updates, we have seen 2-3 phones that would upgrade and then display a "Protol Application Invaid" message. It seems that this problem b...

We are about to migrate from a PBX to Call Manager with 7940/7960 phones. Many of them are in very loud areas. Currently, each PBX phone has an associated analog port with an amplified ringer configured with the same DN. It is my understanding tha...