User`s guide

Section 360−381−C02

4.10 Loopback Test (Nx64 − Primary T1 Only)

Use the Loopback test to check where on the line problems are occurring when an alarm is reported on the card.

See the Nx64 documentation for additional loopback information.

Use the following steps to enable/disable the card loopback.

Step Action System Response

1. Select which card you want to test (Card 1, Card 2

or half size)

Displays your choice

2. Select the channel number you want to test. Use

the <Tab> key to highlight the channel number and

<Enter> to select the channel

Flags the channel

3. Select to enable or disable the test. Enable starts

the test, and Disable stops it

Displays your choice

4. Select the loopback mode (local, network or re-

mote)

Displays your choice. V.54 must be enabled on

64xN settings to use remote loopback

5. Select Apply New Settings to save your choices.

and enable/disable the loopback

If you have chosen to enable the loopback, this will

start the test. You will have to go back into this

menu and select Disable to end the test.