•
control of card operation
•
status report to the controller
•
maintenance diagnostics
Functional description of the NTDK16
The 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 Figure 55 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.
NT8D02 and NTDK16 Digital Line Cards
Option 11C and 11C Mini
Page 367 of 544
Technical Reference Guide