Avaya 700431778 IP500 Phone 2 Extension Card (Refurbished)Avaya IP500 Phone 2 Card Key Features: Mfr. Part #: 700431778 Provides 12 RJ45 ports: The first 2 ports are analog extension ports for the connection of analog telephones. Can be fitted with an IP500 daughter card that uses an additional 4 ports for connections Power Failure Transfer : supports 1 power failure extension to trunk (loop start only) when fitted with an IP500 Analog Trunk daughter card Maximum: 4 per IP500 control unit Compatible with