Nortel NT1R20, Description

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Line cards Description
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QPC578 Integrated Services
Digital Line Card
Introduction
The QPC578 Integrated Services Digital Line Card is a peripheral equipment
(PE) device that may be installed in any peripheral shelf or NT8D13
Peripheral Equipment (PE) Module. The ISDLC interfaces eight digital
telephone lines to the Meridian 1 switch. Each line interface is independently
configurable by software control using the Multi-line Telephone
Administration program (LD 11).
The digital line card supports voice only or simultaneous voice and data
service over a single twisted pair of standard telephone wiring. When a digital
telephone is equipped with the data option, an asynchronous ASCII terminal
or personal computer acting like an asynchronous ASCII terminal can be
connected to the system through the digital telephone.
To use the ISDLC, the following requirements must be met:
— Double density peripheral shelves must be equipped (one shelf per loop).
— The system must run X11 release 7 (or later) or X08 release 10 (or later)
software.
— Quadruple density loops must be defined in hardware (SW5 set to ON on
the associated peripheral buffer card) and software (LD 17).
— At remote locations using remote peripheral equipment (RPE), the
ISDLC must be QPC578B, series C or higher.