Cisco Systems SMD48FXSE Manuel d'utilisateur télécharger pdf (Page 32)

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Cisco VG350 Voice Gateway Hardware Installation Guide

OL-25970-01

Chapter 2 Cisco Double-Wide High Density Analog Service Modules

FXO Fail-Over Bypass Ports

Bypass/Failover Port, also called Fail-over Trunk Bypass, provides a way to use designated analog phone

ports to make phone calls through the Public Switch Telephone Network (PSTN) during power-outage

or power savings circumstances.

Table 2-2 shows the RJ-11 connector assignment.

Table 2-2 RJ-11 Connector Assignment

Faceplate

Label IN (RJ-11) OUT (RJ-11) Power ON Power OFF

FXO

BYPASS-0

To PSTN To external

FXO Interface

(optional)

PSTN to external FXO

Interface

FXS Port 46 to RJ-21

connector

PSTN to RJ-21

connector Port 46

No connection to

external FXO I/F

FXO

BYPASS-1

To PSTN To external

FXO Interface

(optional)

PSTN to external FXO

Interface

FXS Port 47 to RJ-21

connector

PSTN to RJ-21

connector Port 47

No connection to

external FXO I/F

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Cisco Systems SMD48FXSE Manuel d'utilisateur Page 32