3 Definitions, symbols and abbreviations
24.3903GPPRelease 17Stage 3TSUnstructured Supplementary Service Data (USSD) using IP Multimedia (IM) Core Network (CN) subsystem IMS
3.1 Definitions
For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [1].
For the purposes of the present document, the following terms and definitions given in 3GPP TS 22.011 [17] apply:
3GPP PS data off
3GPP PS data off exempt service
For the purposes of the present document, the following terms and definitions given in 3GPP TS 24.229 [6] apply:
3GPP PS data off status
For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.122 [19] apply:
Equivalent Home (EHPLMN)
Home PLMN (HPLMN)
Visited PLMN (VPLMN)
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [1].
AS Application Server
IMS IP Multimedia core network Subsystem
PS Packet Switched
UE User Equipment
USSD Unstructured Supplementary Service Data
USSI Unstructured Supplementary Service Data over IM CN subsystem