Nortel Networks 553-3001-211 manual QPC841 Quad Serial Data Interface card, Contents

872

Page 857 of 894

QPC841 Quad Serial Data Interface card

Contents

This section contains information on the following topics:

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 857

Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 858

Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 860

Connector pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 862

Configuring the QSDI card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 864

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 870

Introduction

The QPC841 Quad Serial Data Interface (QSDI) card provides four RS-232-C serial ports between the system and external devices. The QSDI card plugs into a slot in the common equipment area of any system.

The Quad Serial Data Interface card is normally used to connect the system to its administration and maintenance terminal. It is also used to connect the system to a background terminal (used in the Hotel/Motel environment), a modem, or the Automatic Call Distribution (ACD) and Call Detail Recording (CDR) features.

The QSDI card is compatible with all existing system software. It does not support 20 mA current loop interface.

Circuit Card Description and Installation