SipOutgoingTransferInitializing

The SipOutgoingTransferInitializing event is sent to an application when the application makes a request to transfer a call to another location using the TransferLine API procedure. An application would handle this event if it wanted to send call instance data to the phone being transferred at the time of the transfer.

The phone that is being transferred then has the ability to process the SipTransferExecuting immediate event to retrieve the call instance data for further processing. During the SipTransferExecuting event, the transferred phone could access the call instance data using the GetCallInstanceDataLength and GetCallInstanceData API procedures.