Earners of this badge will be able to define Teleservices, Bearer Services and Supplementary Services, and describe the full range of services that TETRA is capable of delivering - Group Call, Individual Call, Circuit Switched Data, Packet Switched Data, all Short Data Service (SDS) variants, and all Supplementary Services. They will also be aware of the payload and overhead capacity of each service, and the data rate enhancements described in TETRA Release 2.