Configuring Emergency Transfer Relay (Etr); Etr Overview; Setting Etr State - Avaya G350 Administration

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Configuring Emergency Transfer
Relay (ETR)
This chapter provides information about configuring the G350's Emergency Transfer Relay (ETR)
feature and contains the following sections:
•

ETR overview

•

Setting ETR state

•
Viewing ETR state
ETR overview
The ETR feature provides basic telephone services in the event of system failure, such as a power outage
or a failed connection to Avaya Communication Manager. ETR is activated automatically. When ETR is
activated, the Avaya G350 Media Gateway connects the fixed analog trunk port (7/1) to the fixed analog
line port (7/2). An outside telephone exchange can be connected to the trunk port and an analog telephone
can be connected to the line port. All calls are then directed by the analog relay between the outside line
and the analog telephone. A current-loop detection circuit prevents ongoing calls from being
disconnected when normal functioning resumes. If a call is in progress on LINE 1 when the problem
ends, the call continues. The fixed trunk port (7/1) and analog line ports (7/2 and 7/3) do not start to
operate until the call ends.
When ETR is active and the G350 has power, the ETR front panel LED is lit.
Setting ETR state
By default, ETR is set to go into effect automatically in the event of power outage or failed connection to
Avaya Communication Manager. There is rarely if ever a reason to change this setting. You can activate
and deactivate ETR manually.
To activate ETR manually, use the following command. Generally, you should only use this command for
testing since activating ETR shuts down your telephone system except for the connection between the
analog trunk port (7/1) and the first analog line port (7/2).
set etr 7 manual-on
To deactivate ETR manually, use the following command. If the system fails, the trunk and port are
automatically latched. ETR does not become active in the event of link failure unless you restore the ETR
setting to .
auto
set etr 7 manual-off
Administration of the Avaya G350 Media Gateway
June 2004
— an overview of the G350's ETR feature
— instructions on how to set the ETR state
— instructions on how to display the ETR state

Configuring Emergency Transfer Relay (ETR)

ETR overview
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