The present document specifies the Abstract Test Suites (ATS) and partial IXIT proforma for the Network Layer (Layer 3) at the mobile radio interface of the GSM or DCS (Phase 2+) mobile stations (MS) conforming to the ENs for Layer 3, cell selection, Enhanced Full Rate Speech, Multi-band, GSM-R band (R-GSM), the voice group call service (VGCS), voice broacast service (VBS) and enhanced Multi-Level Precedence and Pre-emption service (eMLPP) for the
digital cellular telecommunications systems (Phase 2+).
The ISO standards for the methodology of conformance testing and the TTCN language are used as the basis for the test specifications.