ETSI - EN 300 392-11-14
Terrestrial Trunked Radio (TETRA); Voice Plus Data (V+D); Part 11: Supplementary Services Stage 2; Sub-Part 14: Late Entry (LE)
| Organization: | ETSI |
| Publication Date: | 1 May 2002 |
| Status: | inactive |
| Page Count: | 23 |
scope:
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.
Aspects relating to all supplementary services are detailed in EN 300 392-9 [4].
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