Iphone How to make a call that includes pauses and # to dial conf numbers [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

Problem using tel: with * (star, asterisk)

I am building an application that needs to dial conference numb开发者_运维技巧ers (919-900-9000,,,1234#). The commas are pauses and the # is entered after the password. I have tried to use the NSURL but this strips out any special characters including * and #. Is there another way to make a call programmatically on the Iphone?

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You cannot. To prevent third-party app from dialing phone numbers that can cost the user money, iOS blocks those options. Basically the user has to take responsibility and dial the conference number themselves.