1) Disconnect AC/DC power cord from the headset charger base
2) Connect both the RJ9 and 3.5mm (accessory plug) from Plantronics Electronic Hookswitch for Avaya 1400 & 9000 Series Phones / Plantronics Electronic Hookswitch for Avaya 2420, 4600, & 5000 Series Phones into Plantronics base
3) Connect RJ9 into headset jack on Avaya phone base
4) Reconnect AC/DC power cord to headset charger base
5) Set compat slider to A on headset charger base
6) Test the headset!
Plantronics Electronic Hookswitch for Avaya 1400 & 9000 Series Phones Compatible AVAYA Phone Models:
1408, 9608, 9670
1416, 9611, 9620L
1608, 9620, 2410
1616, 9621, 4630
9404, 9630, 6416D+M
9406, 9640, 6424D+M
9504, 9641G
9508, 9650
Plantronics Electronic Hookswitch for Avaya 2420, 4600, & 5000 Series Phones Compatible AVAYA Phone Models:
2420, 5420
4610, 5610
4610SW, 5620
4620, 5621
4620SW
4621SW
4622SW
4625SW