Abstract: Call transfer method for transferring a call in progress between a first terminal (A) and a second terminal (B) by means of a telecommunication network (1), to a third terminal (C), which method includes steps in which: a call (11) is established between the first and the second terminal; the second terminal places the call with the first terminal on hold, and calls a call transfer server (3) connected to the network; once a call (12) is established between the second terminal and the server, the second terminal provides the server with a telephone number of the third terminal; the server transmits an order to establish a call (14) with the third terminal; when the third terminal answers, it is put in communication with the first terminal, and the calls of the second terminal with the network and the call transfer server are interrupted.