Avaya IPO 500 Extn Card Dgtl Sta 8 telephone switching equipment

This card is used to add digital station (DS) extension ports to the IP500 control unit. It provides 8 RJ45 DS extension ports for use with Avaya digital phones not including IP phones. A further 4 RJ45 ports are provided for trunk connections when an IP500 trunk card is fitted to this card.