Cisco CallManager

Cisco CallManager (CCM) is a computer platform that provides traditional PBX telephony features and functions to packet telephony devices such as Cisco IP phones and Voice over IP (VoIP) gateways. CCM also supports supplementary and enhanced services such as hold, transfer, forward, conference, automatic route selection, speed dial, and last number redial.

The CCM software is pre-installed on the Cisco Media Convergence Server, a dedicated Windows 2000-based PC. CCM uses open standards such as TCP/IP, H.323, and MGCP. CCM takes care of the switching requirements of IPCC.