This 48 volt power supply can be used with many Avaya, Polycom, and Cisco voip phones. Polycom VVX Models > 101, 201, 300, 301, 310, 311, 400, 401, 410, 411, 500, 501, 511, 550, 600, 601, 611, 1500,CCX 400, 500, 600, 700. Avaya > 1110 1120e 1140e 1210 1220 1230 Cisco > CP-7902G 7911G 7914 7915 7916 7940 7941 7945 7960 7960G 7962 7965 7970G.
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