Telecommunications switching system and procedure in a cellular mobile telecommunications system receiving free call switching attempts

摘要

The invention relates to a telephone exchange system (100) in a cellular mobile telecommunication system (110) with a telephone exchange (120) that has a computer included or connected, and which free-of-charge, simply and quickly accepts attempts to connect calls as replies to messages (250) sent to mobile station (130), and which refuses attempts to connect calls. The messages can include, for example, Gallop poll surveys, games and quizzes.