0 Scope

03.833GPPCall Waiting (CW) and Call Hold (HOLD) supplementary servicesStage 2TS

The present document gives the stage 2 description of the call completion supplementary services.

The group of call completion supplementary services is divided into the following two supplementary services:

– Call waiting (CW) (clause 1);

– Call hold (HOLD) (clause 2).

0.1 References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

  • References are either specific (identified by date of publication, edition number, version number, etc.) or non‑specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies.
  • A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number.
  • For this Release 1998 document, references to GSM documents are for Release 1998 versions (version 7.x.y).

[1] GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms".

[2] GSM 02.82: "Digital cellular telecommunications system (Phase 2+); Call Forwarding (CF) Supplementary Services ‑ Stage 1".

[3] GSM 03.11: "Digital cellular telecommunications system (Phase 2+); Technical realization of supplementary services".

[4] GSM 04.08: "Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer 3 specification".

0.2 Abbreviations

Abbreviations used in the present document are listed in GSM 01.04.