partyone

I work in a small call center and thought wouldn't be wonderfule to use my bluetooth headset with my telephone. I saw a Jabra A210 mobile adapter that allows you to use a non-bluetooth cellphone with a blue tooh adapter. http://www.jabra.com/JabraCMS/NA/EN/MainMenu/Products/Accessories/JabraA210/JabraA210 Our phone system have an amplifier that has a standard phone jack which connects to our head set. I want to make a dongle that connects to a box that connects to a 2.5 mm phono plug, so I may plug up the mobile adapter. Is this possible? I know this sounds crazy but I am so tired of wearing a cord at work.