0 Scope

23.0843GPPMulti Party (MPTY) supplementary serviceRelease 17Stage 2TS

The present document gives the stage 2 description of the multi party supplementary services.

Only one multi party supplementary service has been defined, this is the Multi Party (MPTY) service, and is described in clause 1.

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. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.

[1] 3GPP TR 21.905: "3G Vocabulary".

[2] 3GPP TS 23.011: "Technical realization of supplementary services – General Aspects".

[3] 3GPP TS 23.083: "Call Waiting (CW) and Call Hold (HOLD) supplementary services ‑ Stage 2".

[4] 3GPP TS 23.018: "Basic Call Handling"

0.2 Abbreviations

In addition to those below, abbreviations used in the present document are listed in 3GPP TR 21.905 [1].

SII2 Service Interaction Indicators Two