WantekCorded Telephone Headset Dual w/Noise Canceling Mic Compatible with ShoreTel Plantronics Polycom Zultys Toshiba NEC Aspire Dterm Nortel Norstar Meridian Siemens ROLM Landline Deskphones(F602S2)

Wantek Telephone Headset with Microphone RJ9 Corded Phone Headphones Noise Canceling Landline Headsets for Plantronics Polycom Avaya Yealink Call Center Home Office Desk IP Phones

Callez RJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable