Connector Pin Assignments - Avaya Nortel Communication Server 1000 Reference

NT8D02 and NTDK16 Digital Line cards
loop of varying length up to 1070 m (3500 ft) using 24 AWG wire with a maximum allowable
AC signal loss of 15.5 dB at 256 kHz, and a maximum DC loop resistance of 210 ohms; 26
AWG wire is limited to 745 m (2450 ft).
Table 158: Digital line card-power required
±5.0 V dc
+15.0 V dc
–15.0 V dc
Foreign and surge voltage protections
In-circuit protection against power line crosses or lightning is not provided on the NT8D02
Digital Line card. The NT8D02 Digital Line card does, however, have protection against
accidental shorts to –52 V DC analog lines.
When the card is used to service off-premise telephones, primary and secondary Main
Distribution Frame (MDF) protection must be installed.
Off-premise telephones served by cable pairs routed through the central office, or crossing a
public right-of-way, can be subject to a requirement for on-card protection, and MDF protectors
may not be acceptable. Check local regulations before providing such service.
Environmental specifications
Table 159: Digital line card - environmental specifications
environmental specifications of the card.
Table 159: Digital line card - environmental specifications
Operating temperature
Operating humidity
Storage temperature

Connector pin assignments

Table 160: NT8D02 Digital Line card - backplane pinouts
designations at the backplane connector, which is arranged as an 80-row by 2-column array
358 Circuit Card Reference
Voltage
Parameter
Comments? infodev@avaya.com
Current (max.)
150 mA
1.6 Amp
1.3 Amp
Specifications
0° to +60°C (+32 to +140°F), ambient
5 to 95% RH (non-condensing)
–40° to +70° C (–40° to +158° F)
on page 358 shows the
on page 359 shows the I/O pin
July 2011