DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) (GSM); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; IP MULTIMEDIA (IM) SUBSYSTEM SH INTERFACE; SIGNALLING FLOWS AND MESSAGE CONTENTS (3GPP TS 29.328 VERSION 14.5.0 RELEASE 14)

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) (GSM); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); CUSTOMISED APPLICATIONS FOR MOBILE NETWORK ENHANCED LOGIC (CAMEL) PHASE 4; STAGE 2 (3GPP TS 23.078 VERSION 14.0.0 RELEASE 14)

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) (GSM); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; ANSI-C CODE FOR THE FIXED-POINT EXTENDED ADAPTIVE MULTI-RATE - WIDEBAND (AMR-WB+) SPEECH CODEC (3GPP TS 26.273 VERSION 14.0.0 RELEASE 14)

European Telecommunications Standards Institute

UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); TECHNICAL REALIZATION OF CIRCUIT SWITCHED (CS) MULTIMEDIA SERVICE UDI/RDI FALLBACK AND SERVICE MODIFICATION; STAGE 2 (3GPP TS 23.172 VERSION 14.0.0 RELEASE 14)

European Telecommunications Standards Institute

INTEGRATED SERVICES DIGITAL NETWORK (ISDN); SIGNALLING SYSTEM NO.7; DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); APPLICATION OF ISDN USER PART (ISUP) VERSION 3 FOR THE ISDN-PUBLIC LAND MOBILE NETWORK (PLMN) SIGNALLING INTERFACE; PART 2: PROTOCOL IMPLEMENTATION CONFORMANCE STATEMENT (PICS) PROFORMA SPECIFICATION

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) (GSM); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; ORIGINATING IDENTIFICATION PRESENTATION (OIP) AND ORIGINATING IDENTIFICATION RESTRICTION (OIR) USING IP MULTIMEDIA (IM) CORE NETWORK (CN) SUBSYSTEM; PROTOCOL SPECIFICATION (3GPP TS 24.607 VERSION 14.0.0 RELEASE 14)

European Telecommunications Standards Institute

OPEN SERVICE ACCESS (OSA); APPLICATION PROGRAMMING INTERFACE (API); PART 6: MOBILITY SCF (PARLAY 5)

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; OPEN SERVICE ACCESS (OSA); PARLAY X WEB SERVICES; PART 15: MESSAGE BROADCAST

European Telecommunications Standards Institute

OPEN SERVICE ACCESS (OSA); APPLICATION PROGRAMMING INTERFACE (API); PART 1: OVERVIEW (PARLAY 5)

European Telecommunications Standards Institute

INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - SUBADDRESSING (SUB) 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 NETWORK

European Telecommunications Standards Institute