Chapter 1. Cisco CallManager
Cisco CallManager is an IP telephony call-processing solution. It provides distributed, scalable enterprise call processing and IP telephony features for IP phones, Voice over IP (VoIP) gateways, and multimedia applications and devices.
CallManager can be deployed using several different models, as shown in Figure 1-1:
- Single site: In this model, CallManager provides call processing at a single site, with no telephony being implemented over an IP WAN.
- Multisite WAN with centralized call processing: In this case, CallManager is deployed at a central site, and it provides call processing for a number of sites, with VoIP/IP telephony traffic being carried over an IP WAN between sites.
- Multisite WAN with distributed ...