Samsung DCS SLI Single Line Expansion Card 4 Port
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This card is a four circuit analog station interface for industry standard single line telephones or other analog peripheral devices (voice mail, etc.). Each circuit is equipped with an analog DTMF receiver and provides the over-voltage protection required for connection to telephone company off premises extension circuits (OPX). It can be inserted in any universal card slot in all cabinets. Each port on this card is intended for connection to one telephone. Connecting multiple telephones to a port may result in incorrect operation or damage to the card.