Sends an acknowledgement for the remote that accepted the invitation. Namespace: Microsoft.Rtc.Signaling
Assembly: Microsoft.Rtc.Collaboration (in microsoft.rtc.collaboration.dll)



Exception type Condition

An exception occurred in the application while calling the IMediaNegotiation interface.


An error occurred while sending the ACK.


Thrown when the operation already timed out or ack already sent or when the original offer is null.


The acknowledgement should be sent as soon as possible to avoid the remote from timing out the invitation. This method does not wait for the acknowledgement to be actually sent on the wire. The application should use the invite operation for this purpose.

Thread Safety

All public static (Shared in Visual Basic) members of this type are thread-safe. Instance members are not guaranteed to be thread-safe.


Development Platforms

Windows XP Professional with Service Pack 2 (SP2), Windows Server 2003, Windows Vista Ultimate Edition, Windows Vista Business Edition, Windows Vista Enterprise Edition

Target Platforms

See Also