602QS1 Wantek Corded Telephone Headset w/Noise Canceling Mic + Quick Disconnect, Compatible with Avaya 1416 2410 9508 Aastra 6757i Allw
Aastra ehs guide - IPN Headsets
Certified Aastra Phone Compatible Headsets
Amazon.com: PC Headset to Rj9/Rj10 Adapter Cable - Convert Computer Stereo Headphone Dual 3.5mm to Phone Jack for Avaya 2400 4600 Series Aastra 6757i NEC Aspire DT300 DSX ShoreTel IP230 Telephones : Electronics
Headset setup instruction for using EHS cable with Aastra Phones - 6753i, 6755i, 6757i, and 6757i
Amazon.com: OvisLink Call Center Headset Compatible with AASTRA Phones | Noise Canceling | with RJ9 Quick Disconnect Cord | Flexible and Rotatable Microphone | Call Center Headset for Office & Telemarketers : Electronics
Amazon.com: PC Headset to Rj9/Rj10 Adapter - Convert Computer Stereo Headphone Dual 3.5mm to Phone Jack for Avaya 2400 4600 Series Aastra 6757i NEC Aspire DT300 DSX ShoreTel IP230 Telephones : Electronics