Issue 5 November 2000
363-206-208
Equipment and Rear Access Cabling for the DDM-2000 OC-12 Multiplexer
Lucent Technologies - Proprietary
See Notice on first page
OC-3/OC-12 Bay Intershelf Office Alarm Cabling
(1) For a DDM-2000 OC-3/OC-12 combined bay application where the DDM-2000
OC-3 shelf (or shelves) office alarms are to be multed to the DDM-2000 OC-12
shelf, obtain an ED-8C724-20, Group 383 office alarm cable listed in Table 2-7
on page 2-40 and connect it to J64 of the DDM-2000 OC-12 shelf.
(2) Route the office alarm cable to the side of the bay and connect to P56 of the
DDM-2000 OC-3 shelf directly above the DDM-2000 OC-12 shelf, as shown in
Figure 2-14 on page 2-61.
NOTE:
Multing between additional DDM-2000 OC-3 shelves in the bay is covered in
363-206-204,
DDM-2000 OC-3 Multiplexer Installation Manual.
(3) Dress and tie the cables as close to the backplane as possible without touching
any backplane pins.
Parallel Telemetry Cabling - Rear Access
NOTE:
Parallel Telemetry is not available in OC-12, Release 7.
Description
Parallel telemetry provides a set of alarm and status outputs in the form of contact
closures which can be reported to a maintenance center through a telemetry system.
Connection of parallel telemetry requires a parallel telemetry system in the office, and
thus parallel telemetry is only used in a central office environment.
Unless otherwise specified, shelf 1, the bottom shelf in the bay, should be cabled
directly to the parallel telemetry equipment per the following procedure. Additional
shelves in the bay are daisy-chained up from shelf 1. The shelf identification (SID)
number for the parallel telemetry is determined by backplane wiring and the wiring
assignments within the mult cable. If shelf positions in a bay are skipped, then SID
numbers for shelves above the empty position will not match the shelf positions in the
bay.
Parallel telemetry cable options are listed in Table 2-4 on page 2-37.
Parallel telemetry connections are listed in Table 2-9 on page 2-42.
To Next Page
Loading...
Need help?
General
