Fxo Fail-Over Bypass Ports - Cisco VG350 Installation Manual

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
Faceplate
Label
FXO
BYPASS-0
FXO
BYPASS-1
OL-25970-01
shows the RJ-11 connector assignment.
Table 2-2
IN (RJ-11) OUT (RJ-11)
To PSTN To external
FXO Interface
(optional)
To PSTN To external
FXO Interface
(optional)
RJ-11 Connector Assignment
Power ON
PSTN to external FXO
Interface
FXS Port 46 to RJ-21
connector
PSTN to external FXO
Interface
FXS Port 47 to RJ-21
connector
Cisco VG350 Voice Gateway Hardware Installation Guide

FXO Fail-Over Bypass Ports

Power OFF
PSTN to RJ-21
connector Port 46
No connection to
external FXO I/F
PSTN to RJ-21
connector Port 47
No connection to
external FXO I/F
2-5