Avaya IPO 500 Digital Station 30 Supported by IP Office core software level 2.1(31) minimum IP403, IP406 V1, IP406 V2, and IP412 IP500 running R4.2 or earlier; Professional Edition is required IP500 running R5.0 or higher IP500 V2 control unit running R6.0 or higher Digital station ports for use with 1400, 2400, 4400, 5400, and 6400 series digital telephones. Also compatible with 3810 wireless telephone. Also compatible with 9500 series digital phones on IP Office R7.0 or higher