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blutooth telephone

Hi people who are smarter than me! I have been searching the great Google for the past while and I cannot find something that does this.
I love the portability of cellphones and i love the look an feel of landlines (you cannot beat the look of a phone on a a desk. What I want is a device that connects to my cellular telephone wirelessly and that a landline can plug into. This means that it must supply about 40 - 60 VDC to power an old phone that DOES NOT HAVE EXTERNAL POWER SUPPLY so it could operate a touch tone phone from the 80's and 90's. When I get a call on my phone I want it to ring the phone. When I pick up the handset I want it to answer the call and allow me to talk to the person. When I place a call I want to be able to pick up the handset and then dial a 10 digit number and then it place the call through my cell phone. During the call I want to be able to press a number on the landline and for it to press that number on my phones keypad. when i put the handset down i want it to hang up. Is this even possible? can it be done? let me know!
Thanks!
scott 

caitlinsdad27 days ago