Nortel Meridian 1 Option 11C Manual page 109

Running the link diagnostic test
To run the link diagnostic test on the Meridian 1, use the following procedure:
1 Call a technician at the far end. Ask for loopback mode at that facility.
2 When loop-back mode at the far end is confirmed:
• Disable the DCHI/DDCH using:
LD 96
DIS DCH N
• Disable the 2.0 Mb PRI card and run loop-back test using:
LD 60
DISL L
RMST L or RMST L C
Remote loop-back test
The remote loop-back test also called the near end loop-back test, checks the
integrity of the 2.0 Mb PRI from the Meridian 1 system to the far end. The far
end must be in loop-back mode before this test can be performed. Refer to
Figure 13 on page 110.
The 2.0 Mb PRI channel or loop (card) tested must be disabled.
PRI Maintenance
Option 11C
Page 109 of 126
2.0 Mb DTI/PRI