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

Convert two 3.5mm plugs to single 4P4C RJ headset plug Works great with most VOIP phones with a RJ9/Rj10/Rj22 headset jack Save money by buying PC headsets to use with your office phone's headset jack Does not work with RJ11 jack, which is wider...

Use your 3.5mm headset with almost any office phone - 8 settings cover most phone models including Cisco Combines the PH35-RJ9A of the PH35-RJ9Cisco adapters! Works great with most VOIP phones with a RJ9/Rj10/Rj22 headset...

Use your headset with almost any office phone - 8 settings cover most phone models Combines our PC35-RJ9A and PC35-RJ9Cisco adapters into one universal! Convert two 3.5mm plugs to single 4P4C RJ9/RJ10 headset plug. Works with mono and...