Is it possible to programmatically dial numbers during a phone call?

Question

I know it is possible in Android to make a dialer,

but is it possible to make the dialer "press 1" during a phone call?(like when you call support and you have to press all sort of numbers just to talk to a person) Is there code of how to do it?

Answer 1

thanks to simon who pointed me to Sending DTMF tones over the uplink in-call,

so it seems there is an app that does this https://play.google.com/store/apps/details?id=com.shdroid.bridgetrial&feature=more_from_developer#?t=W10 , but people don't know how to do it http://code.google.com/p/android/issues/detail?id=1428