hi
I want to make a telephone device in my own.
I searched a lot for finding a dial up modem shield for arduino but couldn't find any 
please introduce me one
se8820726:
hi
I want to make a telephone device in my own.I searched a lot for finding a dial up modem shield for arduino but couldn't find any
please introduce me one
You won't find one for good reason. The cost of getting a license to sell a device that connects to the switched telephone network is very expensive. And to sell only one board seems pretty silly.
Paul