Nortel Passport 15000, Hardware Installation And Maintenance, Page: 251 / 874

Chapter 17 Hardware procedures 251
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Bundling FP cables
Bundle FP cables to make cable management easier and to evenly distribute
the weight of the coax cables in the extended cable management brackets.
Prerequisites
• You must be familiar with “Safety considerations and best practices”
(page 53).
• Bundle cables in groups of four or six.
• The cables for each FP must be connected, labeled, bundled together, and
tie-wrapped along the entire cable path before the cables of another FP
are connected. To maintain sequential organization of cable bundles, the
FP adjacent to the connected FP must be cabled and bundled next.
• Ensure that you have addressed the criteria in 241-1501-205 Passport
15000, 20000 Site Requirements and Preparation Guide for assessing
cable management. See “Cable routing” (page 86) to determine the cable
management strategy that is appropriate for your situation.
Procedure steps
1 When all the transmitting cables from the same FP are connected to the
termination panel, use tie-wraps to bundle them together. For example,
with 12 transmitting cables coming from half of the faceplate of a 12-port
DS3, bundle the first sequential 6 in one cluster, then the second 6 in
another. (The mini-coax cables for each 8w8 connector may already be
sheathed into a bundle.) Repeat the same pattern for the 12 receiving
cables on the same faceplate. For a 4-port DS3, bundle the 4 transmitting
cables together, then the 4 receiving cables. Include the control port cable
in one of the bundles for the FP, keeping the cable at the outside of the
cluster.
2 Tighten the tie-wraps of each bundle snugly, but not tightly. The cables
must not be crimped by the tie-wraps. Do not tie-wrap the portion of the
cable bundle that is under the FP faceplates to the cable channel. This
enables the card to be unseated without stressing the cable connections.
3 When using the extended cable management brackets, fasten the
adjacent FP’s cables to the finger beside this one, until the row fills.
Fasten the next FP’s cables to the inner finger of the next nearest row. The
rows and columns in the table map directly onto the finger and arm
pattern of each extended bracket. For the pattern of cable bundles per
finger, see