A method for controlling the establishment of a connection with a transport network, said message consisting of extracting from a first signaling message a piece of switching status information for a transport switch of said node, configuring said transport switch within said switching status (65), estimating (64) a piece of time information regarding the configuration of said transport switch and generating a second signaling message intended for a network element of said transport network, said second signaling message comprising a piece of time information for determining a configuration end date of said transport switch. Said second signaling message may be transmitted without waiting for the end of communication of said transport switch. A controller is also described.