Ds1/T1 Cpe Loopback Jack; Installing A Loopback Jack; Selecting The Loopback Jack Installation Method - Avaya G450 Installing And Upgrading

DS1/T1 CPE loopback jack

This section provides information on how to install and use a DS1 loopback jack to test the DS1
span between the Avaya Server or Gateway and the network interface point. The loopback jack
is required when DC power is at the interface to the MM710 media module.
Note:
Do not remove the loopback jack after installation. It should always be available
Note:
for remote tests of the DS1 span.
Note:
For G450 Media Gateway systems, the channel service unit (CSU) is integrated
Note:
within the MM710 Media Module. This means that there is no need for a separate
external device. The loopback jack isolates the MM710 internal CSU from the DC
power and properly loops the DC span power.
This section covers:

Installing a loopback jack

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Administering a loopback jack
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Testing a loopback jack with a smart jack
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Testing a loopback jack without a smart jack
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Configurations using fiber multiplexers
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Installing a loopback jack
You can use one of two installation options:
Installing a loopback jack with a smart jack
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Installing a loopback jack without a smart jack
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Selecting the loopback jack installation method

Select the installation method as follows:
Install the loopback jack at the interface to the smart jack, if possible.
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This position provides maximum coverage of CPE wiring when remote loopback tests are
run.
If the smart jack is not accessible, install the loopback jack at the extended demarcation
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point.
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DS1/T1 CPE loopback jack

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