3 Abbreviations
09.083GPPApplication of the Base Station System Application Part (BSSAP) on the E interfaceRelease 1999TS
For the purposes of the present document, the following abbreviations apply:
BSS Base Station System
BSSAP Base Station System Application Part
BSSMAP Base Station System Management Application Part
CCCH Common Control CHannel
DLCI Data Link Connection Identifier
DTAP Direct Transfer Application Part
MSC Mobile‑services Switching Centre
MSC‑A Mobile‑services Switching Centre, Anchor (Anchor MSC)
MSC‑I Mobile‑services Switching Centre, Intermediate (Intermediate MSC)
MSC‑T Mobile‑services Switching Centre, Target (Target MSC)
SAPI Service Access Point Identifier
SCCP Signalling Connection Control Part
TCAP Transaction Capabilities Application Part
Other abbreviation used in the GSM specifications are listed in 3GPP TS 01.04.