Call a Phone number and pass DTMF using the iPhone SDK

Question

Please suggest me to achieve the below requirement using iphone SDK.

1) Programatically Dial a Phone Number through the iPhone SDK

2) Send additional DTMF after the number is called.

After googled found tel URL scheme is available to make a call. Not sure about sending DTMF tones. Please help me.

https://developer.apple.com/iphone/library/featuredarticles/iPhoneURLScheme_Reference/Articles/PhoneLinks.html

Thanks

Answer 1

1) is done by opening an url wil the tel protocol like

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:1-234-567890"]];

2) is afaik not possible in the current SDK