The present document defined addressing for Terrestrial Trunked Radio system (TETRA) supporting Voice plus Data (V+D). It also gives background information of the air interface, the interworking between TETRA systems and to other systems via gateways, the terminal equipment interface on the Mobile Station (MS), the security aspects in TETRA networks, the management services offered to the operator, the performance objectives, and the supplementary services that come in addition to the basic and tele-services used as a basis for TETRA standardization. The present document defines and specifies the TETRA addressing and identities and their organization in gro