Administration of the Avaya G350 Media Gateway - Avaya Support

Chapter 11: 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 — an overview of the G350’s ETR featureSetting ETR state — instructions on how to set the ETR stateViewing ETR state — instructions on how to display the ETR stateETR overviewThe ETR feature provides basic telephone services in the event of system failure, such as apower outage or a failed connection to Avaya Communication Manager. ETR is activatedautomatically. When ETR is activated, the Avaya G350 Media Gateway connects the fixedanalog trunk port (7/1) to the fixed analog line port (7/2). An outside telephone exchange can beconnected to the trunk port and an analog telephone can be connected to the line port. All callsare then directed by the analog relay between the outside line and the analog telephone. Acurrent-loop detection circuit prevents ongoing calls from being disconnected when normalfunctioning resumes. If a call is in progress on LINE 1 when the problem ends, the callcontinues. The fixed trunk port (7/1) and analog line ports (7/2 and 7/3) do not start to operateuntil the active call ends.When ETR is active and the G350 has power, the ETR front panel LED is lit.Setting ETR stateBy default, ETR is set to go into effect automatically in the event of power outage or failedconnection to Avaya Communication Manager. You can activate and deactivate ETR manuallyvia the CLI.To activate ETR manually, use the following command:set etr 7 manual-onGenerally, you should only use this command for testing. The manual-on option activates theconnection between the analog trunk port (7/1) and the first analog line port (7/2). The otheranalog line port (7/3) will also be disabled.Issue 3 January 2005 117