Nortel Networks NN43001-301 manual Channel Handler description, Kbit/s Clear Data Hardware

20ISDN Primary Rate Interface equipment overview

•QMT8 Asynchronous Data Module (ADM), QMT11 Asynchronous/Syn- chronous Interface Module (ASIM) or QMT21 High Speed Data Module (HSDM)

•Data line card

64 Kbit/s Clear Data Hardware

The QMT21 High Speed Data Module (HSDM) is required in the clear-data pathway to support the 64Kbit/s clear-data function. One module is required at each system end of any connection.

D-Channel Handler description

This section provides descriptions of the D-Channel (DCH) cards, the MSDL card, and the Downloadable D-Channel Daughterboard.

NT6D11 DCH

Power requirements

The power requirements for the NT6D11AB/11AE/AF DCH are:

•+5 volts at 3 amperes

•+12 volts at 75 milliamperes

•-12 volts at 75 milliamperes

DCH/PRI interface

The NT6D11AB/AE/AF DCHs connect to the PRI2 cards by means of a special RS422 cable, the QCAD328A, which is a special RS422 cable; refer to "QCAD328" (page 300) of the Cabling chapter for more details.

DCH faceplate

NT6D11AB/AE/AF DCHs have one Light Emitting Diode (LED), to indicate an active or inactive state, and two external connectors:

•Port J1 is a standard asynchronous port providing an interface for non-PRI applications.

Note: This connection will not support an Add-on Data Module (ADM) terminal.

•Port J2 is the D-Channel Interface port.

Figure 2 "NT6D11 DCH faceplate layout" (page 21) shows the faceplate layout.

Nortel Communication Server 1000

ISDN Primary Rate Interface Installation and Commissioning

NN43001-301 02.03 Standard

Release 5.5 7 December 2007

Copyright © 2003-2007, Nortel Networks