Lucent DDM-2000 OC-3 User And Service Manual page 770

363-206-285
Issue 2, February 2000
6. NOTE:
If the timing mode option switches are not set the same on the two
TGS/TG3 circuit packs, the FAULT LED will remain lighted on the second
circuit pack installed.
Install second (protection) TGS/TG3 in TIMING slot 2.
Response:
7. Is timing mode set to external DS1?
If YES, then continue with Step 8.
If NO, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
8. If the NE ACTY LED on the User Panel remains on, use the CIT command
rtrv-sync to verify that the operational mode of the system is External. If
the operational mode is Holdover, check the DS1 timing references.
9. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
FAULT LED on TGS/TG3 lights for about 15 seconds then
goes off. ACTIVE LED remains off.
DDM-2000 OC-3 M
Detailed Level Procedure:
ULTIPLEXER
DLP-503
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