Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario
NT8D09 Analog Message Waiting Line card
Page 537 of 894
Physical description
The circuitry is mounted on a 31.75 cm. by 25.40 cm (12.5 in. by 10 in.)
printed circuit board.
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.
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 Figure 106 on
with a red LED which lights when the card is disabled (see Figure 106 on
. At power-up, the LED flashes as the analog line card runs a
self-test. If the test completes successfully, the card is automatically enabled
(if it is configured in software) and the LED goes out.
(if it is configured in software) and the LED goes out.
Functional description
The NT8D09 Analog Message Waiting Line card contains a microprocessor
that provides the following functions:
that provides the following functions:
•
self-identification
•
self-test
•
control of card operation
•
status report to the controller
•
maintenance diagnostics
interdigital time
40 ms
speed
12.5 digits/s
Table 172
NT8D09 Analog Message Waiting Line card application and
compatibility (Part 2 of 2) (Continued)
NT8D09 Analog Message Waiting Line card application and
compatibility (Part 2 of 2) (Continued)
Equipment
Specifications