The choice of the method of access to an outgoing international exchange from the national network is a purely national matter. Nevertheless, if an international connection is set up by automatic switching from an exchange other than the international exchange which is the outgoing point of the international circuit used, arrangements should be made in the national network to transmit over the international circuit at least the signals required to ensure the satisfactory setting-up, control and clearing-down of the international connection.
ITU-T Q.26 FRENCH-1988 Referenced Document
ITU-T E.260 Basic Technical Problems Concerning the Measurement and Recording of Call Durations*， 1993-01-01 Update
ITU-T Q.26 FRENCH-1988 history
1988ITU-T Q.26 FRENCH-1988 DIRECT ACCESS TO THE INTERNATIONAL NETWORK FROM THE NATIONAL NETWORK