BackToBackCall.BeginEstablish Method

Begins an asynchronous operation to establish the back-to-back call between two call legs.

Namespace:  Microsoft.Rtc.Collaboration
Assembly:  Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)

Syntax

'Declaration
Public Function BeginEstablish ( _
    userCallback As AsyncCallback, _
    state As Object _
) As IAsyncResult
'Usage
Dim instance As BackToBackCall
Dim userCallback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult

returnValue = instance.BeginEstablish(userCallback, _
    state)

public IAsyncResult BeginEstablish(
    AsyncCallback userCallback,
    Object state
)

Parameters

• userCallback
  Type: System.AsyncCallback
  The method to be called when the asynchronous operation is completed.

• state
  Type: System.Object
  A user-provided object that distinguishes this particular asynchronous operation from other asynchronous operations.

Return Value

Type: System.IAsyncResult
An IAsyncResult that references the asynchronous operation.

Exceptions

See Also

Reference

BackToBackCall Class

BackToBackCall Members

Microsoft.Rtc.Collaboration Namespace