Amazon.com: Cisco Headset 530 Series Cable RJ-9 to Quick Disconnect - Spare – Charcoal, 2-Year Limited Liability (CP-HS-W-RJ=) : Electronics
Cisco Headset 531 (Wired Single with Quick Disconnect coiled RJ Headset Cable) 889728143745 | eBay
Amazon.com: Telephone Headset w/RJ9 Quick Disconnect Cable for Cisco Plantronics Avaya Siemens Nortel Panasonic IP Phone Deskphone Landline Phone for Call Center Office w/3.5mm Audio Jack for Cell Phone & PC :