Answer is here - The Headset Adapter for Cisco IP Phones!
The Headset Adapter allows you to use any standard cell phone headset with your Cisco IP phone.
Here are the benefits of using the Cisco Headset Adapter:
- SAVINGS! Cheapest Plantronics headset for Cisco IP phone costs -75, good headset will cost you over a hundred. At the same time good Plantronics headset for cell phone costs -30. Thus, total costs for cell phone headset with the Cisco Headset Adapter will -45.
- FREEDOM OF A CHOICE! You can choose the cell phone headset you like - monaural, binaural, in-the-ear, over-the-ear, even Bluetooth headset (Bluetooth adapter required). You are not limited to one manufacturer.
- SIMPLICITY OF USE! Installation is very simple - just connect the Cisco Headset Adapter to the headset jack in the back of your Cisco IP phone, and plug you headset into the adapter. No boxes on the table, no batteries, no settings.
- UNIVERSAL PLUG! Manufacturers like Plantronics have proprietary feature called "Quick Disconnect." It allows you quickly disconnect your headset. The keyword here is "proprietary". You are getting same function as a standard feature.
- MULTIPLE USES FOR THE HEADSET! You can share your headset between your cell phone and Cisco IP phone.
Guaranteed to work with Cisco 7940, 7960, and 7970 phones. US patent pending.