Avaya

APV-63 is for Avaya Avaya 1408, 1416, 1608, 1616, 4630, 5410, 2410, 6416D+M, 6424D+M, 9404, 9406, 9504, 9508, 9608, 9611, 9620, 9620L 9621, 9630, 9640, 9641, 9650, 9670

APV-66 is for Avaya 420, 2420, 4610, 4610SW, 4620, 4620SW, 4621SW, 4622SW, 4625SW, 4630SW, 5420, 5610, 5620, 5621

If your model is not listed above, you can use this Handset Lifter