Jabra Link 20 Avaya EHS Adapter supports integrated ring tone notification, answer/end calling, volume & mute controls on Jabra compatible wireless headsets. Compatible With Alcatel 8 Series IPTouch AVAYA 2410 Telephone AVAYA 5410 Telephone AVAYA 5420 Telephone AVAYA 5610 Telephone AVAYA 6416D+M Telephone AVAYA 6424D+M Telephone AVAYA 9620 Telephone AVAYA 9630 Telephone Definity 6416D+M One-X Deskphone Edition 9620 One-X Deskphone Edition 9630 One-X Deskphone Edition 9640 One-X Deskphone value Edition 1608 One-X Deskphone value Edition 1616 Jabra GN9120 Telephone Jabra GN9330e Telephone Jabra GN9350e Telephone Jabra PRO 9460 Telephone Jabra 9470 Telephone