Introduction
Enhance Communications and Simplify Management
Cisco Unified CallManager software is the call-processing component of the Cisco Unified Communications system. It is a scalable, distributable, and highly available enterprise IP telephony call-processing solution.

Cisco Unified CallManager Version 5.0 enhances application delivery through the support of line-side Session Initiation Protocol (SIP) and SIP trunk-side enhancements. These enhancements facilitate increased interoperability with third-party applications and devices, and provide the foundation for supporting innovative new presence-based applications. In addition, Cisco Unified CallManager 5.0 simplifies deployment and management by supporting a Linux-based appliance model implementation. This version also features networking and administration enhancements, including support for Cisco RSVP Agent which enables more efficient use of networks.

Cisco Unified CallManager 5.0 includes the following features: