Nortel Passport 7400, Hardware Installation, Maintenance, And Troubleshooting, Page: 165 / 438

165
Passport 7400 Hardware Installation, Maintenance, and Upgrade 5.2S1
Chapter 36
Termination or sparing panel replacement
Replace a termination or sparing panel for failure or upgrade, to restore or
maintain configured services or redundancy.
• “Prerequisites to termination or sparing panel replacement” (page 165)
• “Termination or sparing panel replacement task flow” (page 166)
Prerequisites to termination or sparing panel replacement
• Some of the procedures in this task are not located in this NTP. Ensure
you have access to the required NTPs.
• There are two categories of sparing panels, single and modular. Single
sparing panels are used for sparing most types of FPs. Modular sparing
panels are used for sparing 32-port multi-service access (MSA32) DS1
or E1 FPs. When replacing a single sparing panel, traffic is disrupted for
the time it takes to perform the procedure.
• If you replace termination or sparing panels in the back of a seismic
cabinet that contains 16-slot Passport switches, leave some rack space
between the termination panels for each switch This space aids airflow
through the cabinet and provides space for cables.
CAUTION
Service loss for sparing configuration
Non-MSA32 FPs will experience a loss of service on
any active ports for the time it takes to replace the
termination or sparing panel.