Nortel Networks Circuit Card - Manual (Page 272)

Page 272 of 906 NT5D33 and NT5D34 Lineside E1 Interface cards
553-3001-211 Standard 3.00 August 2005
of module or cabinet. In all other modules or cabinets where the conditions
listed below do not exist, the LEI will work in any two adjacent card slots:
• In the NTAK12 Small Remote IPE Expansion Cabinet only card slots
10-15 are available.
• In the NT8D37 IPE module, if the 25-pair I/O connectors are partially
split between adjacent IPE card slots, the LEI works only in card slots
where Unit 0 of the motherboard card slot appear on the first pair of the
25-pair I/O connector.
If installing the LEI into the NT8D37 IPE module, determine the vintage level
model. 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 LEI 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 LEI.
See Table 101 for the vintage level information for the NT8D37 IPE
modules.
Available and restricted card slots in the NT8D37 IPE module
If installing the LEI into an NT8D37 IPE module, the card slots available
depend on the vintage level module.
Table 101
LEI card – NT8D37 IPE module vintage level port cabling
Vintage Level
Number of ports
cabled to I/O panel
NT8D37BA 30 ports
NT8D37DE 16 ports
NT8D37EC 30 ports