Nortel Circuit Card Installation Manual page 211

NT5D11 and NT5D14 Lineside T1 Interface cards
Certain vintage levels have dedicated 25-pair I/O connectors only for card
slots 0, 4, 8, and 12. These vintage levels are cabled with only 16 pairs of
wires from each card slot to the I/O panel. Some of the 25-pair I/O connectors
are split between adjacent card slots. Other vintage levels cable each card slot
to the I/O panel using a unique, 24-pair connector on the I/O panel. In these
vintage levels, the lineside T1 card can be installed in any available pair of
card slots. However, because of the lower number of wire pairs cabled to the
I/O panel in the lower vintage level, only certain card slots are available to the
lineside T1 card.
See Table 84 for the vintage level information for the NT8D37 IPE
modules.
Table 84
Lineside T1 card – NT8D37 IPE module vintage level port cabling
Vintage Level
NT8D37AA
NT8D37BA
NT8D37DC
NT8D37DE
NT8D37EC
Vintage levels cabling 24 ports
For modules with vintage levels that cabled 24 ports to the I/O panel, the
lineside T1 card can be installed in any pair of card slots 015.
Number of ports
cabled to I/O panel
16 ports
24 ports
16 ports
16 ports
24 ports
Circuit Card Description and Installation
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