363-205-401
Conversions: NTP-008
Issue 7, March 1997
Page 1 of 2
Add or Remove Protection Line Option
DO ITEMS BELOW IN ORDER LISTED
FOR DETAILS, GO TO
SUMMARY: The protection line is removed by removing the LSU and LIU-P and
setting the ADU protection line option (mini switch position 1 on S1 or S2) for no
protection. An LFU may be required if interfacing with a DDM-1000 or DDM-2000
multiplexer. The protection line is added by setting the ADU for the protection line
(mini switch position 1 on S1 or S2), optioning and installing the LSU and LIU-P LIU.
When changing the protection line equipage, both the RT and the CO equipment
must be changed.
1.
!
CAUTION:
When changing ADU protection equipage option, changing
any other mini switch position will cause service interruption.
Removing the ADU will interrupt service on digroup A if the
system is equipped for FPB Mode 1.
NOTE:
Changing protection line equipage option will cause an MN
alarm until changes at both ends are complete.
Remove the ADU and change mini switch position 1 on S1
(AUB26 or AUB27) or S2 (AUB22 or AUB24). Reinstall ADU.
2.
If adding protection line proceed to Step 5. If removing protection
line continue with Step 3.
3.
Remove LSU and LIU in LIU-P slot. Alarms will clear when both
ends make the changes.
4.
If required, install LFU. Proceed to Step 8.
