access phone features via iphone SDK

is it p开发者_开发百科ossible to use iphone's sdk to call a person through an app and have control over the voice etc?

Regards

Yes its possible to call a person using the iPhone sdk. Try this -

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://8004664411"]];

But its not possible to control over voice or even call log. Because "phone" is a separate application and Apple does not allow to interact with this app.