SipTransferExecuting

The SipTransferExecuting event is sent to an application when another telephony device has commanded your application to transfer to a new call location. This event is sent to an application during early call transfer setup.

An application would want to handle this event if it wants to receive call instance data from the device that initiated the transfer operation. In this case, application software can access the call instance data using the GetCallInstanceDataLength and GetCallInstanceData API procedures.