Cisco CallManager Device License 500 User

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 extends enterprise telephony features and capabilities to packet telephony network devices such as IP phones, media processing devices, voice over IP (VoIP) gateways, and multimedia applications. Additional services such as unified messaging, multimedia conferencing, collaborative contact centers, and interactive multimedia response systems are made possible through Cisco Unified CallManager open telephony APIs.