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About This Item
Full Description
SS-HOLD enables a user to interrupt communication on an existing call and then subsequently, if desired, re-establish communication.
Man-Machine Interface (MMI) and charging principles are outside of 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 2 description identifies the functional capabilities and the information flows needed to support the supplementary service as specified in its stage 1 description (see EN 300 392-10-12 [7]). The stage 2 description is followed by the stage 3 description, which specifies the protocols at the air interface and at the various Inter-System Interfaces (ISI) to support the service.
The present document is applicable to TETRA Voice plus Data terminal equipment and networks.
Document History
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ETSI EN 300 392-11-12
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Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 12: Call Hold (HOLD)- Most Recent
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ETSI EN 300 392-11-12
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 12: Call Hold (CH)- Historical Version