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2.0 Mb DTI/PRI Administration and Maintenance Guide Book ... - Home

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Page 976 of 1536 Chapter 8 — <strong>PRI</strong> <strong>Maintenance</strong><br />

Figure 130<br />

2 <strong>Mb</strong> <strong>PRI</strong> Link Diagnostic (Far End Loopback) Test<br />

Running the link diagnostic test<br />

To run the link diagnostic test on the Meridian 1, use the following procedure:<br />

1 Call a technician at the far end. Ask for loopback mode at that facility.<br />

2 When loop-back mode at the far end is confirmed:<br />

• Disable the DCHI/DDCH using:<br />

LD 96<br />

553-3011-315 St<strong>and</strong>ard 10.0 May 1999<br />

NEAR END FAR END<br />

Option 11<br />

DIS DCH N<br />

• Disable the 2 <strong>Mb</strong> <strong>PRI</strong> card <strong>and</strong> run loop-back test using:<br />

LD 60<br />

DISL L<br />

NTAK79/<br />

NTBK50<br />

RMST L—test run from <strong>PRI</strong>2 end<br />

RMST L or RMST L C<br />

Far End Switch<br />

RLBK L—this end in loopback

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