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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.5
OL-14912-01
Chapter 1 Functionality
About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies
About Conferencing via Leased Lines
The serial gateway enables conferencing between H.323 endpoints on IP networks connected via a
leased line (as shown in Figure 1-8).
Figure 1-8 Conferencing via Leased Lines
About IP-to-Legacy MCU Conferencing
The serial gateway provides an IP-to-serial interface for communication with legacy MCU equipment
(as shown in Figure 1-9).
Figure 1-9 IP-to-Serial Interface Communication via Legacy MCU
Leased
line
157170
H.323
endpoint
H.323
endpoint
Cisco
chassis/unit
with serial
gateway
Cisco
chassis/unit
with serial
gateway
IP network
IP network
Adaptor
Adaptor
V35.
DTE DCE
V35.
DCE DTE
157171
H.323
endpoint
H.323
endpoint
Cisco
chassis/unit
with serial
gateway
IP network
IMUX
V35.
Legacy MCU
DTE
V.35
V35.
DCE
V.35
ISDN