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
NOTE:
For bays containing multiple shelves that will have DS1 timing multed between
the shelves, the shelf that will be providing sync to the reference clock should be
mounted at the bottom of the bay.
(2) Obtain a Group 151, 152, 182, 183 or 153 (D.A.) DS1 timing cable listed in Table
2-6 on page 2-39 and connect to J266 of the Group 394 cable.
(3) Route the timing cable out of the DDM-2000 OC-12 bay per Figures 2-22, 2-23
or 2-24 on pages 2-69, 2-70, 2-71 to the DS1 timing reference, stacking the
cables as shown in Figure 2-2 on page 2-49 or Figure 2-3 on page 2-50.
(4) Dress and tie the cables in the bay as close to the DDM-2000 OC-12 backplane
as possible without touching any backplane pins.
(5) Cut the cable to the desired length and wire-wrap the loose end of the DS1 tim-
ing cable to the output of the DS1 reference clock making connections as shown
in Table 2-14 on page 2-46.
(6) Obtain a second Group 151, 152, 182, 183 or 153 (D.A.) DS1 timing cable and
connect to J65 of this same shelf.
(7) Wire-wrap the loose end of this DS1 timing cable to the SYNC INPUT of the
DS1 reference clock making connections as shown in Table 2-14 on page 2-46.
OC-12 Intershelf DS1 Timing Connections
NOTE:
Perform these procedures to daisy-chain the timing for the remaining shelves in
the bay and to connect them to the same DS1 reference clock as the shelf that is
providing the synchronous timing.
NOTE:
For DS1 timing to be delivered to all shelves in the bay, DS1 timing cable mults
from shelf to shelf must be daisy-chained down to the bottom shelf. Do not skip
any shelves.
(1) Obtain a Group 151, 152, 182, 183 or 153 (D.A.) DS1 timing cable listed in Table
2-6 on page 2-39 and connect it to J66 of the 2nd shelf up from the bottom of
the bay per Figure 2-23 on page 2-70.
(2) Route the timing cable out of the DDM-2000 OC-12 bay to the same DS1 timing
reference that is connected to the bottom shelf, stacking the cables as shown in
Figure 2-2 on page 2-49 or Figure 2-3 on page 2-50.
(3) Dress and tie the cables in the bay as close to the DDM-2000 OC-12 backplane
as possible without touching any backplane pins.
(4) Cut the cable to the desired length and wire-wrap the loose end of the DS1 tim-
ing cable to the output of the DS1 reference clock making connections as shown
in Table 2-14 on page 2-46.
Summary of Contents for DDM-2000 OC-12
Page 4: ......
Page 370: ...GL 22 Issue 5 June 2000 363 206 208 Glossary ...
Page 382: ...363 206 208 Index 1 ...
