telprompt: Removing extension no from alert and call log of phone

Question

I am trying to make a call through the telpromt command to return to my application after it makes a call:

NSString *telno = @"telprompt://121,,,,14";
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:telno]];

It shows an alert view showing which number I am calling. For above code it shows "121,,,,14" in alertview and recent call log of Phone. I have found some app, they does not show extension number, they only show "121" in alertview for example and in call log it shows "App Name" as dialed contact and "121" as dialed number. [Actually that app programetically adds a contact named "App Name" with main no "121" for example]. Is there any way to remove extension number [for example ",,,,14"] from alert and call log of phone?

Answer 1

Don't use telprompt , just display a normal UIAlertView with a cancel and call button. Then when you have full control over the message in the UIAlertView , if the user choices call just use the tel scheme.

Also telprompt is not an official scheme, thus Apple can remove it in any future version of iOS.