68P80801E30-A 5/1/2002
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Gen 3 Site Controller System Manual
Chapter 6 System Testing
T1 Connection Test
Note:
Do not use the test set Loop Code switches. Pressing Loop Up or
Loop Down affects the loop-back test.
1.
At the prompt, type:
loop [line #]
This command displays the following message on the service computer:
2.
Press the RESTART button on the T1 test set to clear the display and
start the test.
Run the test uninterrupted for five minutes. No errors should be
detected.
3.
Use the Up and Down arrow keys on the test set keyboard to scroll
through the results.
These keys are located next to the Results I key.
4.
At the iSC> prompt, type:
deloop [line #]
This command stops the site controller from looping the T1 line. The
following message is displayed:
Note:
To put all T1/E1 spans in line loop-back use
loop 0
command.
iSC>
loop 1
T1 interface in loopback mode
iSC>
deloop 1
T1 interface returned to normal mode