The Avaya IP 500 Digital Station 8 Base Card (700417330) is an ideal solution for businesses in need of reliable telecommunication systems. It provides 12 RJ45 ports - the first 8 ports are DS ports for the connection of Avaya digital phones. It can also be fitted with an IP500 trunk interface card that uses the additional 4 ports for trunk connections, with a maximum of 3 per IP500 control unit. Optional IP500 trunk interface cards, such as IP500 Analog Trunk 4, IP500 Universal PRI 1 and IP500 Universal PRI 2 are also available.