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 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 used whenever the phone lines leave the building in which the switch is installed.
The NT1R20 OPS analog line card provides:
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Line supervision
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Hook flash
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Battery reversal
An administrator can install this card in any IPE slot.
