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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Release 5.5
OL-14910-01
1
Functionality
This section describes the following topics:
• 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 1-10
About Cisco Unified Videoconferencing 3500 Gateway Products
The Cisco Unified Videoconferencing 3500 Gateway series consists of the following products:
• Cisco Unified Videoconferencing 3527 PRI Gateway (see the “About the Cisco Unified
Videoconferencing 3527 PRI Gateway”)
• Cisco Unified Videoconferencing 3522 BRI Gateway (see the “About the Cisco Unified
Videoconferencing 3522 BRI Gateway” section on page 1-1)
About the 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.
About the 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.