If you do NOT have a separate jack for a headset and handset this means you do NOT have a dedicated headset jack. See video below for details.
In this case you will need a telephone adapter such as the GN8210. The telephone adapter will connect to your telephone and then allow both your headset and handset to connect to your phone. The connection is simply referred to as the handset jack.
If you have questions about your phone's compatibility and which accessory is required for your phone feel free to start a chat session or call us 703-766-6363. Global Teck Worldwide provides a ProSetup Service that walks you through the complete installation of any headset on our website. All items mentioned in this article are available online for purchasing.