Nortel Networks 553-3001-211 manual NT1R20 Off-Premise Station Analog Line card, Contents

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NT1R20 Off-Premise Station

Analog Line card

Contents

This section contains information on the following topics:

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Connector pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Configuring the OPS analog line card. . . . . . . . . . . . . . . . . . . . . . . . . . 172

Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Introduction

The NT1R20 Off-Premise Station (OPS) analog line card is an intelligent eight-channel analog line card designed to be used with 2-wire analog terminal equipment such as analog (500/2500-type) telephones and analog modems.

The NT1R20 Off-Premise Station (OPS) analog line card provides eight full-duplex analog telephone line interfaces. Each line has integral hazardous and surge voltage protection to protect the system from damage due to lightning strikes and accidental power line connections. This card is normally

Circuit Card Description and Installation