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ÖNORM EN 300392-12-17 V 1.1.2:2002-04
Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3 - Sub-part 17: Include Call (IC)
Действует
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Разработчик:
Зарубежные/ON
ICS:
33.070.10 Terrestrial Trunked Radio (TETRA) / Стандарт на мобильную связь (TETRA)
Описание
The present document specifies the stage 3 description of the Supplementary Service Include Call (SS-IC) for the Terrestrial Trunked Radio (TETRA). SS-IC permits the served user participating a call to include other participant to that call. Man-Machine Interface (MMI) and charging principles are outside the scope of the present document. Supplementary service specifications are produced in three stages according to the method defined in ITU-T Recommendation I.130 [1]. The stage 1 description specifies the service from the user s point of view (see ETS 300 392-10-17 [7]). The stage 2 description identifies the functional capabilities and the information flows needed to support the service as specified in its stage 1 description (see EN 300 392-11-17 [8]). The present stage 3 description specifies the protocols at the air interface and at the various Inter-System Interfaces (ISI) to support SS-IC.
NOTE 1: According to ITU-T Recommendation I.130 [1], the stage 3 description of any telecommunication service addresses the network implementation aspects. Consequently it comprises two steps: the specifications of all protocols at the various reference points involved in any of the service procedures (notably the service operation) are the first step of the stage 3 description, and the specifications of the functions of the corresponding network entities are its second step.
NOTE 2: The latter have not been provided since they can be derived from the specification of the functional entity
actions in the stage 2 description.
The present document is applicable to Voice plus Data individual and group calls; more specifically to the following
entities:
the MS/LSs of the served user and of the affected user; and
the served user and the affected user Switching and Management Infrastructures (SwMIs) in an individual and
group call.
Ключевые слова:
Telekommunikation, Fernmeldetechnik, Nachrichtentechnik, Kommunikationstechnologie, Informationsverarbeitung, TETRA, terrestrisch, Fernmeldefunk, Bündelfunk, V+D, Sprech- und Datenübertragung, Zusatzdienst, IC, Anruf, Konferenzschaltung