Review on AGPtEK Noise Cancelling Corded Headset: Crystal Clear Hands-Free Call Center Solution with 4-Pin RJ9 Compatibility by Dominique Hunter

Bought for work. THE. Great comfortable headset! Clear sound too! Now my colleagues are jealous and want to order their own. Used on the Cisco VoIP Phone CP8851/CP8841. I'm sure it will work with any phone with an RJ9 connector. When I first plugged it in I thought it was incompatible. I'm an IT professional, so I read the guide last. LAUGH OUT LOUD! Finally figured out I need a headset adapter and find the right channel for my phone. I think I'm on channel 4 or 5.