508 NT8D02 and NTDK16 Digital Line cardsThe NTDK16 digital line card contains a microprocessor that provides thefollowing functions:• self-identification• self-test• control of card operation• status report to the controller• maintenance diagnosticsThe 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. The digital linecard is equipped with 16 identical digital line interfaces. Each interfaceprovides a multiplexed voice, data, and signaling path to and from a digitalterminal (telephone) over a 2-wire full duplex 512 kHz Time CompressionMultiplexed (TCM) digital link. Each digital telephone and associateddata terminal is assigned a separate Terminal Number (TN) in the systemdatabase, giving a total of 32 addressable units per card. The digital linecard supports Nortel Networks’ Meridian Digital Telephone.Figure 128 "Digital line card - block diagram" (page 510) shows a blockdiagram of the major functions contained on the digital line card. Each ofthese functions are described on the following pages.Nortel Communication Server 1000Circuit Card ReferenceNN43001-311 01.04 StandardRelease 5.0 23 May 2008Copyright © 2003-2008, Nortel Networks.
