Manual

1-10
Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Releases 5.6 and 5.7
OL-17010-01
Chapter 1 Functionality
About Cisco Unified Videoconferencing 3500 Gateway Applications and Topologies
BRI Gateways
You can connect the BRI gateway to a local private branch exchange (PBX) that provides the BRI
connection (as shown in
Figure 1-6), or to a public phone network using an NT1 device (as shown in
Figure 1-7).
Figure 1-6 Connecting the BRI Gateway Directly to a PBX that Provides a BRI Line
Figure 1-7 Connecting the BRI Gateway Directly to a Central Office Switch
157166
IP
H.323 terminal
IP phone
Cisco chassis/unit
Cisco Gateway
IP network
BRI
Central Office
switch
PBX
PublicPrivate
157165
IP
H.323 terminal
IP phone
Cisco chassis/unit
Cisco Gateway
NT1
device
IP network
PublicPrivate
BRI
Central Office
switch