3 Definitions and abbreviations

29.1183GPPMobility Management Entity (MME) - Visitor Location Register (VLR) SGs interface specificationRelease 17TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] apply. Additionally the following definitions of 3GPP TS 24.301 [14] apply:

Non-EPS services

SMS only

For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.272 [7] apply:

CS fallback

SMS over SGs

SMS in MME

For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.251 [7A] apply:

Common PLMN

Gateway core network (GWCN)

For the purposes of the present document, the following terms and definitions given in 3GPP TS 24.301 [14] apply:

In NB-S1 mode

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].

LCS Location Services

MME Mobility Management Entity

NEAF Non-EPS Alert Flag

SCTP Stream Control Transmission Protocol

SGsAP SGs Application Part

SMS Short Message Service

PSI Provide Subscriber Information