This European Telecommunication Standard (ETS) specifies the stage one description of the Voice Broadcast Service (VBS) which allows the dist ribution of speech (or other signals which can be transmitted via the speech co dec), generated by a service subscriber, into a predefined geographical area to all or a group of service subscribers located in this area. [Remark: A similar service might be provided for the distribution of d ata messages. This service is not treated in the present stage 1 descripti on. However, the principle requirements and realizations should be co-ordi nated and synergies with the respective work item on General Packet Radio Servic e (GPRS) regarded.] The Voice Broadcast Service (VBS) is applicable to all mobile stations in a certain network and area which have the technical capability and the r espective subscription to receive a VBS call. NOTE: It is not considered as requirement that normal GSM phase 2 mobi le stations will be able to be used for this service. The service is described from the service subscriber s and user s poin t of view; in particular: - the procedure for normal operation with successful outcome; - the action to be taken in exceptional circumstances; - the interaction with other GSM services and features. This ETS does not deal with the Man-Machine Interface (MMI) requiremen ts, but makes reference to the appropriate Global System for Mobile communicat ions (GSM) specifications. This ETS defines a teleservice of the digital cellular telecommunicati on system GSM. Any interaction with other services and/or networks not dealt wit hin clauses 8 or 9 are outside the scope of this ETS.