Lua SwxWare v13.10
This function returns the number of the user that transferred the call into current call routing script.
local sNumber = PBXCall.TransferrerNumber()
This function returns a string value.
If the call is a direct call and not a transferred call the function returns an empty string.
If you are interested in the name of the user who transferred the call you can use the PBXCall.TransferrerName() function.
By Tom Wellige