Abstract: A procedure and system for setting rates between two predetermined subscriptions in a telephone network without the necessity of substantial system changes to the telephone network. Calls between two predetermined subscriptions can be rated according to a special tariff and changes can be easily and flexibly included in the normal invoicing. When the number of subscriptions per customer is limited to two, the common call number for all customers is the same, e.g. 020100. When this number is dialed, the call is directed to the wired network subscription specified in the subscriber number pair, which is stored in a database, when the call is made from a mobile station, and vice versa.

Abstract: The object of the present invention is to achieve in the telephone network a new type of procedure and system for call control and to meet a need observed recently in the telecommunication business for calls rated below normal tariffs especially between certain predeterminable subscriptions. The system of the invention. does not require any substantial system changes in the telephone network. In addition, calls between predetermined subscriptions can now be rated according to a special tariff and the changes can be easily and flexibly included in the normal invoicing. When the number of subscriptions per customer is limited to two. the common call number for all customers in the same, e.g. 020100. When this number is dialled, the call is directed to the wired network subscription specified in the subscriber number pair, which is stored in a database, when the call is made from a mobile station, and vice versa.

Abstract: A method for classifying calls placed from a mobile station by a subscriber to facilitate creation of an invoice record. When placing a call from the mobile station, the subscriber dials a predetermined prefix associated with a particular invoice code to identify the call as belonging to a particular invoice cost group that corresponds to the invoice code. When the invoice record is generated, all calls for which prefixes were dialed and that were placed by the subscriber from the mobile station, are automatically placed in appropriate invoice cost groups in accordance with the invoice codes of the prefixes.

Abstract: A method for placing a call from a first mobile station to a second mobile station using predetermined abbreviated dialing. An A-subscriber dials a short number at the first mobile station which is received by a mobile telephone exhange. The short number is compared to a group of short numbers each having an associated public telephone number corresponding to a unique second mobile station. If a match is found, the associated public telephone number is dialed and a coomunication path is established between the first and the second mobile stations. A billing record of this communication path is recorded at the mobile telephone exchange. Furthermore, the communication between the first and the second mobile stations may be marked as a transferred call to prevent further call transfers.