Outline process and methodology used by EPT WG1 to produce User Requirements (URSs) for Release 2 TETRA, including the process of identifying and resolving the interdependencies between all of the stand-alone URSs for Release 2 TETRA.
Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 2 (3GPP TS 23.083 version 16.0.0 Release 16)
