is it possible phone-calling in ipad?

Recent iPads are having provision to insert sim card in that. So with latest iOS SDK, is it possible to call from my application. I know that in-app call is possible from iPhone. But how about iPad? is any api for that? or any app already in market? any tutorials or links .

tha开发者_运维技巧nks

---

The 3G ipad doesn't support native phone calls. The 3G is just for data transfer. However there's nothing stopping you from creating an app similar to the way Skype and other voice over ip apps work, that allow you to make phone calls from the ipad. Line2 is an example of such an app.

---

It's not possible. The iPad was not created to make phone calls, and there is no native Phone app (like what the iPhone has).

The SIM card slot is to allow internet use via 3G.