Said gadget was supplied from the cell phone supplier. i.e. Sprint, Verizon, Gandalf MTB, Nippocon, etc...
Hi. I saw a product announcement a month or so back, and now cannot recall the manufacturer or details. It was a device that would accept your cellphone, and also plugged into your wall socket, thus connecting all your household phones via your wireless provider. The point was you could tell your landline provider to take a hike, and have all your services (mobile and regular house phones) all work seamlessly through your cell number. If anyone recalls details of this gadget, please let me know! Thanks, Pete.

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