A little project i'd like to one day make (somehow... probably never)
Basically a linesman phone/ beige box in your ordinary cell phone.
(because i'm too tight to buy credit)
It would make beige boxing a whole lot easier so you don't have to carry around a cell phone AND a home phone, and it
looks a lot less weird carrying around a house phone
It could just have a little switch on the side you hit and one would be landline and one would be cell and you can just plug you phone in and ring someone from your contacts list.
Dunno how this could be made though.