Do the 69XX series phones work with the Business Edition version of Communication Mgn?ThanksDavid

How many phones can a Call Manager ring simultaneously? The application is: the customer wants a single incoming call to ring several hundred phones at once. So, a call comes into 555-1234 and the customer wants several hundred phones to ring all ...

How can I integrate a InterTel PBX to do 4 digit dialing with CM?

Is there a part number for Unified Operations Manager? Or does it come with Call Manager?