Method to provide and perform a telephone service

A method of providing and performing a telephone service, in which a calling subscriber number is sensed by a computer system, and wherein the computer system is constructed to perform a telephone service ordered by a subscriber of the subscriber number in accordance with a data program, the computer system comprising:

• a storage device which is caused to contain a predetermined number of transactions in the form of parts of a data program;
• wherein the computer system fetches from the storage device a number of transactions which are combined together to form a data program for defining and performing said service;
• in which transactions constitute program instructions which, in coaction with a superordinate data program, cause at least one of the programs defined by the transactions to be executed, wherein when the subscriber orders a service, the service is stored in the form of codes that correspond to certain transactions from a multitude of transactions;
• wherein said codes are stored in affiliation with the subscriber number;
• and, wherein when the subscriber number is sensed, or read, the computer system fetches said transactions through the medium of said codes and executes said transactions thereby perform said service.