Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario

 NT8D02 and NTDK16 Digital Line cards

The NT8D02 digital line card is equipped with 16 identical units. Each unit 
provides a multiplexed voice, data, and signaling path to and from digital 
apparatus over a 2-wire full duplex 512 kHz time compression multiplexed 
(TCM) digital link. Each digital telephone and associated data terminal is 
assigned a separate terminal number (TN) in the system database, for a total 
of 32 addressable ports per card.

The NT8D02 Digital Line card is equipped with 16 identical digital line 
interfaces. Each interface provides a multiplexed voice, data, and signaling 
path to and from a digital terminal (telephone) over a 2-wire full duplex 
512 kHz Time Compression Multiplexed (TCM) digital link. Each digital 
telephone and associated data terminal is assigned a separate Terminal 
Number (TN) in the system database, giving a total of 32 addressable units 
per card. The digital line card supports Nortel Networks’ Meridian Digital 
Telephone. 

The digital line card contains a microprocessor that provides the following 
functions:

•

self-identification

•

self-test

•

control of card operation

•

status report to the controller

•

maintenance diagnostics

 shows a block diagram of the major functions 

contained on the NT8D02 Digital Line card. Each of these functions is 
described on the following pages.