Cisco Systems 3522 BRI About Cisco Unified Videoconferencing 3500 Gateway Applications and Topologies

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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Release 5.6
OL-17010-01
Chapter 1 Functionality
About Cisco Unified Videoconferencing 3500 Gateway Applications and Topologies
About Cisco Unified Videoconferencing 3500 Gateway
Applications and Topologies
• About Multimedia Conferencing, page 1-6)
• About Point-to-Point Conferencing, page 1-7)
• About Multipoint Conferencing, page 1-7)
• About Gateway IP Network Connections, page 1-8)
• About Gateway ISDN Network Connections, page 1-8)
About Multimedia Conferencing
The Cisco PRI gateway and BRI gateway enable H.323 endpoints on the IP network to communicate
with an H.320 terminal, an ISDN phone, or a regular phone on a circuit-switched public network without
having to connect directly to these networks. The gateway allows all IP network terminals to support
video conferences without connecting every desktop computer to an ISDN line (see Figure 1-1).
Figure 1-1 Multimedia Conferencing through the Gateway
Typical multimedia conferencing applications include:
• Business video conferencing
• Distance learning
• Telemedicine
• Video-enabled call centers
• Telecommuting
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H.323
endpoint
H.323
terminal
ISDN
phone
Regular
phone
H.323
endpoint Cisco
chassis/unit
with serial
gateway
IP network PSDN
ISDN