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Headset Buddy: PC Headset to CISCO Phone Adapter - Dual 3.5mm to RJ9/RJ10 (01-PC35-RJ9Cisco)

Use PC Headset with CISCO Phone RJ9RJ10RJ22 Headset Jack
PC Headsets Better Cheaper Than Cisco Phone Headsets
Works With Both Mono Stereo Computer Headsets
Not for RJ11 Jack Which is Wider Than Your HandsetHeadset Jack
Works With Cisco-based Phone Headset Jacks - Avaya Shortel Etc