Vanguard Managed Solutions Vanguard 342 - Manual (Page 33)

About the Vanguard 342 1-13
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
Type
Daughtercard
Used
Application Description
Branch access to
Central Office DSU DIM, FXS/FXO
and ISDN
Daughtercards The Vanguard 342 supports voice, video and data traffic
between the branch and central office over private or
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
link between
Branch and
Central Office DSU DIM, FXS/FXO
and ISDN
Daughtercards To provide an alternative path in case of network failure,
you can configure and connect serial ports to an external
analog modem or switch 56K DSU. As Figure 1-5
illustrates, you can also configure ISDN for WAN
backup.