Amazon.com: QD Adapter HIS Cable for Plantronics and VoiceJoy Headsets QD Adapter for Yealink Phones and Workable for Avaya IP 1608, 1616, 9601, 9608, 9611, 9611G, 9620, 9630, 9631, 9640, 9641, 9650, 9670 : Electronics
Plantronics HIS Headset Cable | For Avaya J139, J169, J179, 1600 and 9600 series phones, 72442-41
Plantronics His Avaya Adapter Cable - Headset Cable - 72442-41 72442-41 for sale online | eBay
Amazon.com: TruVoice HIS Adapter Cable Compatible with All Plantronics and Truvoice QD Headsets - Connects to Avaya 1608 1616 9601 9608 9611 9611G 9620 9620C 9620L 9621 9630 9631 9640 9641 9650 9670, J100 Series : Industrial & Scientific