Abstract: A method of delivering a telephone number associated with a telephone subscription to the user of a telephone set within the context of said subscription, use of said set requiring the user to provide subscription identification data stored in a data medium held by the owner of said subscription and co-operating with said telephone set. The telephone number is previously stored in the data medium and is transferred into the telephone set at the request of the user, to be delivered to the user of said set, in particular by displaying it on a screen. The invention is suitable for use in mobile telephony.

Abstract: A procedure for automatically replacing a user identification module of a terminal in a communication network includes storing in a memory of the terminal a message indicating the detection of a problem with writing and/or reading the user identification module. A warning message is sent from the terminal to a control station of the terminal during the first exchange of information following detection of the problem. A database listing defective identification modules is updated at the control station. A procedure for sending a new identification module to the user of the terminal is initialized.