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DS/ETS 300392-11-24

Terrestrial Trunked Radio (TETRA); Voice plus Data(V+D); Part 11: Supplementary services stage 2; Sub-part 24: Call Retention (CRT)

active, Most Current
Organization: DS
Publication Date: 27 November 2001
Status: active
ICS Code (Terrestrial Trunked Radio (TETRA)): 33.070.10
scope:

This ETS specifies the supplementary service Call Retention which is applicable to various basic services supported by TETRA SwMIs. Basic services are specified in ETS 300 392-2 [4]. SS-CRT is a supplementary service which applies either during call establishment or once call is established to protect a call from pre-emption by another call of lower priority. Supplementary service specifications are produced in three stages, according to the method described in ITU-T Recommendation I.210 [2]. The present document contains the stage 2 specifications of SS-CRT. The stage 2 descriptions specify the supplementary services functional entities, their relations and the information flows needed to support the supplementary service.

Document History

DS/ETS 300392-11-24
November 27, 2001
Terrestrial Trunked Radio (TETRA); Voice plus Data(V+D); Part 11: Supplementary services stage 2; Sub-part 24: Call Retention (CRT)
This ETS specifies the supplementary service Call Retention which is applicable to various basic services supported by TETRA SwMIs. Basic services are specified in ETS 300 392-2 [4]. SS-CRT is a...
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