Method of controlling the availability of a cellular radiocommunication service, terminal and cellular system for the implementation of the method

摘要

A radio beacon is installed for broadcasting a radio signal in a protected zone. This radio signal carries system information shaped according to a broadcasting channel of a cellular radiocommunication system. This system information comprises a service restriction indication in respect of terminals situated in the protected zone. When it is detected, such an indication is stored by a terminal and transmitted to the cellular system in a call setup procedure prior to any production of audible signals.