Removing An Stm-1 Optical Cross-Connect Cable - Nortel Multiservice Switch 7400 Installation & Maintenance

Removing an STM-1 optical cross-connect cable

Remove the NTPS96 cross-connect (XC) cable between two spared
2pSTM1Ch FPs if any of the following conditions exists:
• A "Facility Defect" Alarm under the Xc component is set and the XC status
LED on the "providingService" card is lit red. This means that the cable is
broken.
• A "Cable Misplaced" Alarm is raised against the Xc component and the XC
status LED on the "providingService" card is lit red. This means that the
cable is connected to the wrong 2pSTM1Ch FPs (not the ones specified
in the Laps provisioning data for workingLine and protectionLine).
Attention: There is no need to disconnect the XC cable if sparing between
two 2pSTM1Ch FPs is no longer required.
Procedure steps
Step
1
Attention: You can also determine which of the two spared 2pSTM1Ch cards is in
"hotStandby" by observing the XC status LED. it is lit on the "providingService" card
and it is OFF on the "hotStandby" card.
2
3
4
Copyright © 2005, Nortel
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Hardware procedures
Action
Determine which of the two spared 2pSTM1Ch cards is in "hotStandby".
d Shelf Card/<x> SpServ osiStby
Determine which ports on the "hotStandby" 2pSTM1Ch are protected.
d -p Lp/<n> Sdh/<port> lineAutomaticProtectionSwitch Lp/
<n> Sdh/<port>
The lineAutomaticProtectionSwitch attribute under the Sdh component
shows the Laps instance if the port is protected, or nothing if the port is not
protected.
Lock the protected ports on the "hotStandby" 2pSTM1Ch.
lock Lp/<n> Sdh/<port>
Unplug the cable. Install a new cable following the procedures in Installing
an STM-1 optical cross-connect cable (page 284).
Nortel Multiservice Switch 7400
Hardware Installation, Maintenance, and Upgrade
NN10600-175 7.1S1 Standard
PCR7.1 and up October 2005
--End--
Nortel Confidential