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Multiservice Switch 7400 Hardware Installation, Maintenance, and Upgrade 6.1S2
Chapter 16
Card cable routing and labeling
Route and label cables prior to connecting the cables to the processor cards,
termination panels, sparing panels, and far-end equipment to simplify your
installation and replacement tasks.
• “Prerequisites to card cable routing and labeling” (page 113)
• “Card cable routing and labeling task flow” (page 114)
Prerequisites to card cable routing and labeling
• Ensure that all cables comply with the appropriate cable specifications.
For more information about cable requirements, including pinouts, see
NN10600-170 Nortel Networks Multiservice Switch 7400 Hardware
Description.
• Before routing any processor card cables, measure the exact distance that
the cables will follow and ensure that all cables are long enough, with
minimal slack management. Also ensure that cables are routed away
from anything that can damage the cable or affect its signals.
• An FP cable assembly with D-sub connectors at its ends typically has a
series of multiple user ports going through it. The series is different when
more than one cable is connected to the same FP. For example, each
NTPS3x fanout cable for the 32-port DS1 or E1 MSA 1-slot FPs has a
SACS connector at one end and is split into two D-subs at the other end,
and the FP uses the same cable assembly twice for different sets of ports.
Whenever you label a cable with D-sub connectors, ensure that you
identify the appropriate series of ports that it handles at the FP, each cable
junction, and the far end (for example, a termination or sparing panel).
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