This European Telecommunication Standard (ETS) defines the Terrestrial Trunked Radio (TETRA) system supporting Voice plus Data (V+D). It specifies the stage one to three of the TETRA gateway to Public Switched Telephone Network (PSTN). Stage one is an overall service description from the user's point of view, but does not deal with the details of the human interface itself.
IN_DEVELOPMENT
prSSH ETS 300 392-4-1:1999 ed.1
40.20
DIS ballot initiated: 12 weeks
Feb 9, 2026
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