在iOS中使用UIWebView进行程序化的电话呼叫，不需要alertView

Is it possible to make a Phone call programatically in iOS using UIWebView without alertView? Basically I know that when we subview a webview and hide it and try to call a number, It calls the number without any problem and gets back to application without any problem. The only thing is can we some how remove the alertview that appears when this webview executes the code "tel:". I also tried the openURL: method but after call finishes we don't get back to application. My requirement is I should make a call programatically without interacting with any alert view and should get back to the application once we are done with the call.Thanks in Advance.Is it possible to make a Phone call programatic