Amazon.com: Avaya Headset HD Voice with HIS Adapter Compatible with Avaya 1600, 9600, J100 Series IP Phones Model, Plus 3.5mm Adapter (Monaural) : Electronics
Axtel PRIME Duo Headset Package for Avaya J100 Series Phones – Shop4Tele
700514055-Avaya L159 Stereo USB Headset New - Telecomex
Amazon.com: RJ9 Avaya Phone Headset Compatible with Avaya 1600, 9600, J100 Series IP Phones Model Noise Cancelling Plus 3.5mm Adapter for Smartphone : Electronics