03.693GPPStage 2TSVoice Broadcast Service (VBS)
VBS can not be used with standard Phase 1 or Phase 2 mobile stations. A dedicated mobile station with VBS capability is required.
A mobile station with VBS capability shall also provide the complete functionality in order to allow the use of Phase 2 services.
Standard Phase 1 and Phase 2 mobile stations in a network shall not be impacted by the presence of VBS services in that network due to VBS signalling, also if the mobile station is operated with a SIM of a VBS service subscriber.