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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Release 5.6
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Functionality • About Cisco Unified Videoconferencing 3500 Gateway Products, page 1-1
• About Gateway Features, page 1-2
• About Cisco Unified Videoconferencing 3500 Gateway Applications and Topologies, page 1-6
• About Cisco Unified Videoconferencing 3500 Gateway Functionality, page 1-11
About Cisco Unified Videoconferencing 3500 Gateway Products
The Cisco Unified Videoconferencing 3500 Gateway series consists of these products:
• Cisco Unified Videoconferencing 3527 PRI Gateway
The Cisco Unified Videoconferencing 3527 PRI Gateway enables audio, video, and data
communication between H.320 endpoints that connect through ISDN, and H.323 endpoints that
connect through a packet-based network. For voice-over-IP, the gateway enables PSTN voice callers
to connect from the ISDN network to IP voice callers. The Cisco Unified
Videoconferencing 3527 PRI Gateway supports one PRI ISDN port.
• Cisco Unified Videoconferencing 3522 BRI Gateway
The Cisco Unified Videoconferencing 3522 BRI Gateway enables audio, video and data
communication between H.320 endpoints that connect through Integrated Services Digital Network
(ISDN), and H.323 endpoints that connect through a packet-based network. For voice-over-IP, the
gateway enables Public Switched Telephone Network (PSTN) voice callers to connect with IP voice
callers. The Cisco Unified Videoconferencing 3522 BRI Gateway supports up to four BRI ISDN
ports.