Can an iOS app control a phone call?

My Mom's deaf. I typically talk to her using a TTY service and she has a TTY phone at her house. I've looked in to iOS TTY and all it ever says is about connecting a cable to the iPhone to use a physical TTY. TTY uses 50bit per second baud-dot code for communications it should be trival to write a program that generates it o开发者_StackOverflow社区n the iPhone. Just a sequence of tones, at a relatively low baud rate. BUT I need to be able to control the phone functionality from an app... Then I could type messages like "txting" and have it send baud dot code to my mom's phone. (I've tried giving her a computer, but she's 86... Old dog... new tricks...)

Any ideas?

No, it not possible. The official iPhone SDK does not allow this kind of interaction with the phone.

You can't do this on the phone, but you could try to make a webservice that does it instead. Then have the app connect to the service to deliver the message.

TAPIComm on this page looks like a sample to work from

http://www.tapi.info/default.aspx/TAPI/PSDKSamples.html

You'd need to run it on a Windows machine with a modem.

I know you were looking for an iOS solution, but it another option might be to switch her to an android phone, since android gives you MUCH more access to basic, deep-down elements of the OS, including access to the voice data stream.