Cisco Systems 545 Serial About Conferencing via Leased Lines, About IP-to-Legacy MCU Conferencing

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
H.323
endpoint
	IP network				IP network
		Adaptor		Adaptor
		V35.	Leased	V35.
H.323	DTE	DCE	line	DCE	DTE
	Cisco				Cisco
endpoint
	chassis/unit				chassis/unit
	with serial				with serial	157170
	gateway				gateway

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

H.323

endpoint

H.323

endpoint

IP-to-Serial Interface Communication via Legacy MCU

IP network
	Legacy MCU
			IMUX
V35.		V35.	ISDN
DTE	DCE
Cisco
chassis/unit	V.35	V.35
with serial
gateway

157171

	Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.5
1-12	OL-14912-01