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SSH ETS 300 549:1996 ed.2

Digital cellular telecommunications system (Phase 2) (GSM); Unstructured Supplementary Service Data (USSD); Stage 2 (GSM 03.90)

Sep 11, 2025

General information

60.60     Sep 11, 2025

DPS

DPS/KT 10

European Norm

33.060.30  

English  

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Scope

This European Telecommunication Standard (ETS) gives the stage 2 description of Unstructured Supplementary Service Data (USSD). The unstructured supplementary service data (USSD) mechanism allows the MS user and a PLMN operator defined application to communicate in a way which is transparent to the MS and to intermediate network entities. The mechanism allows development of PLMN specific supplementary services. The following diagram shows how handling of USSD is carried out, independently of the applications.

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PUBLISHED
SSH ETS 300 549:1996 ed.2
60.60 Standard published
Sep 11, 2025

Related project

Adopted from ETS 300 549: June 1996 (GSM 03.90 version 4.1.1)