Nortel Networks 553-3001-211 manual NT8D02 and NTDK16 Digital Line cards Page 527

NT8D02 and NTDK16 Digital Line cards Page 527 of 894

Environmental specifications

Table 170 shows the environmental specifications of the card.

Table 170

Digital line card – environmental specifications

Parameter	Specifications
Operating temperature	0° to +60° C (+32 to +140° F), ambient
Operating humidity	5 to 95% RH (non-condensing)
Storage temperature	–40° to +70° C (–40° to +158° F)

Connector pin assignments

Table 171 shows the I/O pin designations at the backplane connector, which is arranged as an 80-row by 2-column array of pins. Normally, these pin positions are cabled to 50-pin connectors at the I/O panel in the rear of each module for connection with 25-pair cables to the MDF.

The information in Table 171 is provided as a reference and diagnostic aid at the backplane, since the cabling arrangement can vary at the I/O panel. See Communication Server 1000M and Meridian 1: Large System Installation and Configuration (553-3021-210) for cable pinout information for the I/O panel.

Table 171

NT8D02 Digital Line card – backplane pinouts (Part 1 of 2)

Backplane	Lead	Backplane	Lead
Pinout*	Designations	Pinout*	Designations
12A	Line 0, Ring	12B	Line 0, Tip
13A	Line 1, Ring	13B	Line 1, Tip
14A	Line 2, Ring	14B	Line 2, Tip
15A	Line 3, Ring	15B	Line 3, Tip

*These pinouts apply to both the NT8D37 and NT8D11 backplanes

Circuit Card Description and Installation