I have a client that is a blind receptionist and my school has me making a project that will assist her job. What i want to do is have the number pads on the phone, when pushed, say the button she pushed out loud instaed of the dial tone.
Ex She dials "1" and the speaker will say "one" istead of a beep. and so on
So far i have researched that a MT8870 chip and an ISD chip should help with it. BUt i am not certain that an ISD alone will do it and thoughts of using a basic stamp has come up in a few conversations with fellow students.
The MT8870 link below shows how i am starting the project
http://www.electronicsforu.com/EFYLinux/circuit/jun2003/CI-2-DTMF.pdf
Can anyone please assist in helping me understand more of what i need to do?
Ex She dials "1" and the speaker will say "one" istead of a beep. and so on
So far i have researched that a MT8870 chip and an ISD chip should help with it. BUt i am not certain that an ISD alone will do it and thoughts of using a basic stamp has come up in a few conversations with fellow students.
The MT8870 link below shows how i am starting the project
http://www.electronicsforu.com/EFYLinux/circuit/jun2003/CI-2-DTMF.pdf
Can anyone please assist in helping me understand more of what i need to do?