Female RJ9/RJ10/RJ22 to Male 2.5mm plug headset adapter Convert your RJ9 Phone Headset to 2.5mm Save money by using your existing headset! Does not work with RJ11 (which is the size of the phone jack in the wall, larger than headset phone jacks) 1...

Convert 3.5mm smartphone plug to single 4P4C RJ9/RJ10 Cisco handset jack Works great with Cisco VOIP office phones with a RJ9 headset jack Save money by buying Smartphone headphones to use with your office phone's headset jack Reduce clutter with...