ETSI EN 300 392-11-12

The present document specifies the stage 2 description of the Supplementary Service Call Hold (SS-HOLD) for theTerrestrial Trunked Radio (TETRA).

SS-HOLD enables a user to interrupt communication on an existing call and then subsequently, if desired, re-establishcommunication.

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 inITU-T Recommendation I.130 [1]. The stage 2 description identifies the functional capabilities and the informationflows 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 atthe various Inter-System Interfaces (ISI) to support the service.

The present document is applicable to TETRA Voice plus Data terminal equipment and networks.

Edition:

1.1.2

Published:

05/01/2005

Number of Pages:

24