Answer landline calls from your RJ9 compatible phone hands-free with this Insignia Landline Hands-Free Headset with RJ-9 Connection. It has a mute switch and volume control for convenient adjusting as you talk and listen, and its noise reducing microphone delivers clear call quality. Place the ear pad on either side of your head - this headset is fully reversible and works on either ear. This Insignia headset also has a foam ear pad for added comfort and is compatible with most office or home office phones with the RJ9 port.