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Cisco TelePresence Video Communication Server Control (Cisco VCS Control) provides advanced telepresence applications and session management to all standards-compliant telepresence endpoints, infrastructure, and management solutions. Cisco VCS Control provides Session Initiation Protocol (SIP) proxy and H.323 gatekeeper services, enabling any-to-any interoperability between SIP and H.323 telepresence devices. Cisco VCS Control is a critical part of Cisco's unified call-control solution and is also critical for interoperability with third-party unified communications and IP telephony networks and voice-over-IP (VoIP) solutions.

Cisco TelePresence Video Communication Server Expressway (Cisco VCS Expressway) opens the world outside the firewall to organizations using video communications. Cisco VCS Expressway enables business-to-business communications, empowers remote and home-based workers, and allows service providers to provide video communications to customers. Cisco VCS Expressway provides standards-based and secure firewall traversal for SIP and H.323 devices and enables communication with the outside world regardless of SIP or H.323 protocol.