这对于电话是不可能的，但是对于VoIP是:

This is not possible for phone calls, but for VoIP is:

要拨出电话，应用程序会从其CXCallController对象请求一个CXStartCallAction对象.该操作由一个UUID(用于唯一标识该呼叫)和一个CXHandle对象(用于指定收件人)组成.

To make an outgoing call, an app requests a CXStartCallAction object from its CXCallController object. The action consists of a UUID to uniquely identify the call and a CXHandle object to specify the recipient.

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