363-206-285 Detailed Level Procedure: DLP-510
Issue 2, February 2000 Page 6 of 8
DDM-2000 OC-3 MULTIPLEXER
12. Is this first service being placed on the group and is a protection DS1/DS1PM,
TMUX,orT1EXT circuit pack installed?
If YES, then continue with Step 13.
If NO, then proceed to Step 17.
13. Use the following command to switch from service to protection circuit pack:
switch-ls:address:pri=manual;.
14. Repeat the transmission test in the mux (or demux) direction using the
following command:
test-trmsn-t1:address:dirn=mux (or demux):dur=( );.
15. Was the test successful (error free)?
If YES, then continue with Step 16.
If NO, then proceed to Step 34.
16. Use the following command to clear active switch requests:
switch-ls:address:pri=reset;.
17.
NOTE:
If this is a single-ring configuration and the transmission test is being
performed in the mux direction, use the switch-path command to
switch the path to the other ring and then repeat this test before releasing
loopbacks.
The DS1 circuit under test has passed the DS1 transmission test. Remove the
looping patch cords from the cross-connect point. Use the rls-lpbk-t1: or
rls-lpbk-t3: command to release loopback(s) at the far end, if required.
18. At the near-end (and the far-end) DDM-2000, momentarily depress the
UPD/INIT button on the SYSCTL (or use the upd command) to update the
SYSCTL and remove alarms after the loopbacks have been removed.
19. Repeat this procedure from Step 2 for any additional DS1 circuits to be tested.
20. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
21. See Figure 1. If local tests are being performed, the fiber loopback at the
near-end OLIU must be in place. If end-to-end tests are being performed, at
the far-end DSX-1, STSX, DSX-3, or T1 interface cross-connect point
associated with the DDM-2000 being tested, connect a patch cord from the
OUT jack to the IN jack for the DS1 channel to be tested.
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