Nortel Networks OPTera Metro 3500 - Manual (Page 233)

Hardware feature descriptions 3-5
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Shelves equipped with STX-192 circuit packs
On all types of shelves, slots 13 and 14 are double-width slots for the STX-192.
Slots 11 and 12 are high-speed interface slots for the OC-48 STS or OC-192
optical interface circuit packs. Slots 13 and 14 are for the STX-192 circuit
packs, which provide the STS cross-connect functions for all service slots. The
STX-192 circuit pack interface as STS-192 or STS-48 with the optical
interface slots 11 and 12 and interface as STS-3, STS-12 and STS-48 with the
slots 3 through 10.
See Figure 3-1 for an example of the OPTera Metro 3500 Shelf (NTN476DA)
and Figure 3-3 for an example of the OPTera Metro 3500 Universal Shelf
(NTN476AH). For an example of the OPTera Metro 3500 Shelf (NTN476DA)
equipped with replaceable I/O modules, see
Figure 3-2 . For an example of the
OPTera Metro 3500 Universal Shelf (NTN476AH) equipped with fans and a
replaceable I/O module, see
Figure 3-4 and Figure 3-5 .