BackToBackCall.BeginEstablish(AsyncCallback, Object) Method
Definition
Important
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Begins an asynchronous operation to establish the back-to-back call between two call legs.
public:
IAsyncResult ^ BeginEstablish(AsyncCallback ^ userCallback, System::Object ^ state);public IAsyncResult BeginEstablish (AsyncCallback userCallback, object state);member this.BeginEstablish : AsyncCallback * obj -> IAsyncResultPublic Function BeginEstablish (userCallback As AsyncCallback, state As Object) As IAsyncResultParameters
- userCallback
- AsyncCallback
The method to be called when the asynchronous operation is completed.
- state
- Object
A user-provided object that distinguishes this particular asynchronous operation from other asynchronous operations.
Returns
An IAsyncResult that references the asynchronous operation.
Exceptions
Thrown if BackToBack call is not in the Idle state when the method is called.