How to achieve the below requirement using iOS?
1) Programmatically dial a Phone Number through iOS.
2) Send additional DTMF after the number is called.
I found tel
URL scheme is available to make a call. Not sure about sending DTMF tones.
You can't send DTMF tones over the Phone app directly with the SDK. However, you can append numbers to the phone number like so:
Let's say you want to dial 1-800-555-1212, automatically key in 2 after 3 seconds to pick an option from a voice menu, and then allow the user to press a button that will dial 4 5 . You would pass the following as your phone URL:
@"tel:1-800-555-1212,,,2;45"
This also works in the Contacts and Phone apps. You can even put in commas and semicolons when editing someone's phone number by pressing the + * # key on the phone keypad.
I don't know where this is documented. I figured it out by experimentation and by talking to coworkers who are telephony experts.
无法通过应用程序通过呼叫发送DTMF。
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
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