NT8D02and NTDK16 Digital Line Cards Page367 of 544
Option11C and 11C Mini TechnicalReference Guide
•control of card operation
•status report to the controller
•maintenance diagnostics
Functional descript ion of the NTDK16The NTDK16 digital line card is equipped with 48 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 96 addressable ports per card. Refer to Figure55 on page 368.
The NTDK16 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
The card also provides
•Ability to support Digital sets and the Digital Console M2250
•Provides a serial link (Card LAN) for status report and maintenance.
•Supports loop lengths up to 3500 ft. (1.0 km) using 24 AWG wire.
•Interface between three DS30X loops and 48 TCM lines.