- Plantronics MDA200 (the main device that connects to your office phone and PC)
- Plantronics SSP2714-01 (this is the dongle that is like the BT300 dongle but is somehow optimized for hearing aid bluetooth devices)
- Plantronics EHS cable for your specific office phone. EHS APC41, I think, but verify.
- Bluetooth hearing aid device for your brand of hearing aid. For example, I have Resound hearing aids so I have the Resound Phone Clip+ bluetooth device. You will use your Compilot?
http://www.amazon.com/Plantronics-SSP-2714-01-Network-adapter/dp/B009QA6504
http://www.newegg.com/Product/Product.aspx?Item=N82E16876998412
You may find them cheaper on ebay.