Nortel Networks 553-3001-211 manual NT8D37DE, NT8D37EC

Page 260 of 894 NT5D33 and NT5D34 Lineside E1 Interface cards

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 96 for the vintage level information for the NT8D37 IPE modules.

Table 96

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

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.

553-3001-211 Standard 2.00 September 2004