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Can I connect a cell phone to an old touchtone landline phone?

I want to connect my cell phone to an old 70's touchtone landline phone. Can this be done. I know you can connect a reciever to a cell phone but I miss the old touchtone keypad. Any advice?

VIRON9 years ago
Someone did it with a rotary phone, and I'd think a tone phone would
be easier. Both ancient phone types are otherwise very similar inside.
Sparkfun retro cellphone
They removed their DIY instructions though.
gmoon VIRON9 years ago
Still in the sparkfun tutorial section, I believe.
NachoMahma9 years ago
. It should be possible, by putting the TT keypad contacts in parallel with the cellphone keypad buttons. I seriously doubt that it is feasible, though.
its a lion9 years ago
i dont know.... but if you do manage to get it done, i would love to see how you did it.