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