Vanguard Managed Solutions 342 Application Daughtercard Application Description Type Used

Target Applications

Application Matrix This table describes the application types shown in Figure 1-5 and lists the various daughtercards used for connectivity over a private or public frame relay network:

Application	Daughtercard	Application Description
Type	Used
Branch access to	DSU DIM, FXS/FXO	The Vanguard 342 supports voice, video and data traffic
Central Office	and ISDN	between the branch and central office over private or
	Daughtercards	public network. The FXS/FXO Daughtercard supports
		telephones, PBX, and faxes. Connect a telephone or
		PABX to one FXS port on the FXS/FXO Daughtercard
		and all branch telephones have access to the central office
		PBX. This eliminates long distance telephone charges
		between the branch and central office.
ISDN Backup	DSU DIM, FXS/FXO	To provide an alternative path in case of network failure,
link between	and ISDN	you can configure and connect serial ports to an external
Branch and	Daughtercards	analog modem or switch 56K DSU. As Figure 1-5
Central Office		illustrates, you can also configure ISDN for WAN
		backup.

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