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ÖNORM EN 300392-11-14 V 1.1.1:2002-10

Действует
Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 11: Supplementary services stage 2 - Sub-part 14: Late Entry (LE)
The present document defines the stage 2 specifications of the Supplementary Service Late Entry (SS-LE) for the
Trans-European Trunked Radio (TETRA).
The SS-LE allows radio users to be informed of and, if they are concerned, to join an already existing point-tomultipoint
speech or data call.
Man-Machine Interface (MMI) and charging principles are outside the scope of the present document.
Stage 2 describes the functional capabilities of the supplementary service introduced in stage 1 description. Stage 2
identifies the functional capabilities for the management of the service in the Switching and Management Infrastructure
(SwMI), in the Mobile Station (MS) and in the Line Station (LS). Stage 2 also describes the information flows between
these entities and also the flows sent over the Inter-System Interface (ISI).
NOTE: The stage 2 description is followed by the stage 3 description, which specifies the encoding rules for the
information flows and process behaviour for the different entities in SwMI, MS and LS of the service.
ICS
33.070.10 Terrestrial Trunked Radio (TETRA) / Стандарт на мобильную связь (TETRA)