Physical Description - Avaya Nortel Communication Server 1000 Reference

NT8D09 Analog Message Waiting Line card
Cards later than vintage NT8D09AK support μ-Law and A-Law companding, and provide a 2
dB transmission profile change. The transmission change improves performance on long lines,
particularly for lines used outside of a single-building environment.
The NT8D09 Analog Message Waiting Line card supports 56K modem operation.
Caution:
Damage to Equipment
If a modem is connected to a port on the message waiting line card, do not define that port
in software (LD 10) as having message waiting capabilities. Otherwise, the modem gets
damaged.
The NT8D09 Analog Message Waiting Line card interfaces to and is compatible with the
equipment listed in
compatibility
Table 161: NT8D09 Analog Message Waiting Line card application and compatibility
500-type rotary dial sets (or equivalent):
dial speed
percent break
interdigital time
2500-type Digitone sets (or equivalent):
frequency accuracy
pulse duration
interdigital time
speed

Physical description

The circuitry is mounted on a 31.75 cm. by 25.40 cm (12.5 in. by 10 in.) printed circuit board.
The NT8D09 Analog Message Waiting Line card circuits connects to the backplane through a
160-pin connector. The backplane is cabled to a connector in the bottom of the cabinet which
is cabled to the cross-connect terminal (Main Distribution Frame) through 25-pair cables.
Station apparatus then connects to the card at the cross-connect terminal.
The faceplate of the NT8D09 Analog Message Waiting Line card is equipped with a red LED
which lights when the card is disabled (see
faceplate on page 365. At power-up, the LED flashes as the analog line card runs a self-test.
364 Circuit Card Reference
Table 161: NT8D09 Analog Message Waiting Line card application and
on page 364.
Equipment
Comments? infodev@avaya.com
Specifications
8.0 to 12.5 pps
58 to 70%
150 ms
± 1.5%
40 ms
40 ms
12.5 digits/s
Figure 99: Analog message waiting line card -
July 2011