152 Chapter 26 FP addition
NN10600-175 6.1S2
information about operational compatibilities, see NN10600-551 Nortel
Networks Multiservice Switch 7400/15000/20000 FP Configuration
Reference for the descriptions of your FP type.
• Since 32-port DS1 MSA 1-slot and 2-slot FPs with or without the optical
ports can operate in the same sparing configuration, ensure that the added
FP can be combined in the same sparing configuration. This also applies
to the equivalent E1 MSA FPs. The combinations of main and spare
MSA FPs are identified in the descriptions of the DS1 and E1 FPs in
NN10600-170 Nortel Networks Multiservice Switch 7400 Hardware
Description.
• When an FP is added to a slot that is configured for a different card type,
the FP does not operate and its status LED shows solid amber. If an added
FP shows solid amber, use the procedure for comparing the card type of
an inserted card and its configured slot in NN10600-550 Nortel Networks
Multiservice Switch 7400/15000/20000 Common Configuration
Procedures.
•If a Nortel Networks Multiservice Switch 7480 does not have redundant
power supplies, ensure that the power supply is sufficient to support the
additional FP or FPs. For more information, see the table
“Multiservice
Switch 7480 minimum power supply requirements” (page 477).
CAUTION
Risk of service loss by inadequate power
Two power supplies must be installed before inserting
an MSA32 FP. There is a risk of a shelf reset when
installing an MSA32 FP in a shelf with only a single
power supply. This risk does not apply if the MSA32 is
already installed and one of two power supplies fails.
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