1-9
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
PRI Gateways
You can connect the PRI gateway directly to a PRI line provided by your local ISDN provider (as shown
in
Figure 1-4
), or to a local private branch exchange (PBX) that provides the PRI connection (as shown
in
Figure 1-5
).
Figure 1-4
Connecting the PRI Gateway Directly to a Central Office Switch
Figure 1-5
Connecting the PRI Gateway to a PBX that Provides a PRI Line
271778
H.323
Terminal
IP phone
IP
IP
network
Public
PRI T1/E1
Central office
switch
Private
Cisco Unified
Videoconferencing
Gateway
157167
IP
H.323 terminal
IP phone
Cisco chassis/unit
Cisco Gateway
IP network
PRI T1/E1
Central Office
switch
PBX
Public
Private
