Nortel Networks Circuit Card - Manual (Page 681)

Page 681 of 906
Circuit Card Description and Installation
694
NT8D41BA Quad Serial Data Interface
Paddle Board
Contents
This section contains information on the following topics:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 681
Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 682
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 682
Connector pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 685
Configuring the QSDI paddle board . . . . . . . . . . . . . . . . . . . . . . . . . . . 687
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692
Introduction
The NT8D41BA Quad Serial Data Interface (QSDI) paddle board provides
four RS-232-C serial ports. These ports allow communication between the
system and four external devices, either DTE or DCE. The QSDI paddle
board is normally used to connect the system to the system administration and
maintenance terminal. It can also be used to connect the system to a
background terminal (used in the hotel/motel environment), a modem, or to
the Automatic Call Distribution (ACD) or Call Detail Recording (CDR)
features.
The QSDI paddle board mounts to a special socket on the rear of the
backplane of the following modules:
• NT5D21 Core/Network module