The Cisco CallManager
In years past, voice, video, and data traffic resided on their own physical networks. However, the vision for the future, and today, is for voice, video, and data to reside on the same network. Having such a “converged” solution provides numerous economic benefits, including lower administrative costs. However, connectivity between converged networks and legacy Private Branch Exchanges (PBXs) and the Public Switched Telephony Network (PSTN) is a necessity in your design.
In this section, you examine a central component in your IP telephony network: the Cisco CallManager (CCM). You examine how the CCM fits into the Cisco Architecture for Voice, Video, and Integrated Data (AVVID) strategy. CCM hardware platforms ...