INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - CALL HOLD (HOLD) SUPPLEMENTARY SERVICE - DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO.ONE (DSS1) PROTOCOL - 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; IP MULTIMEDIA (IM) SUBSYSTEM CX AND DX INTERFACES; SIGNALLING FLOWS AND MESSAGE CONTENTS (3GPP TS 29.228 VERSION 14.5.0 RELEASE 14)

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 12: MULTIMEDIA CONFERENCE

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 10: CALL HANDLING

European Telecommunications Standards Institute

UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; IP MULTIMEDIA SUBSYSTEM (IMS); MULTIMEDIA TELEPHONY; MEDIA HANDLING AND INTERACTION (3GPP TS 26.114 VERSION 14.7.0 RELEASE 14)

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) (GSM); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; SOURCE CODE FOR 3GP FILE FORMAT (3GPP TS 26.412 VERSION 14.0.0 RELEASE 14)

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; ANSI-C CODE FOR THE FLOATING-POINT ADAPTIVE MULTI-RATE (AMR) SPEECH CODEC (3GPP TS 26.104 VERSION 13.0.0 RELEASE 13)

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); GENERAL PACKET RADIO SERVICE (GPRS); GPRS CHARGING

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; OPEN SERVICE ACCESS (OSA) APPLICATION PROGRAMMING INTERFACE (API); PART 8: DATA SESSION CONTROL SERVICE CAPABILITY FEATURE (SCF)

European Telecommunications Standards Institute

DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) (GSM); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); MULTI PARTY (MPTY) SUPPLEMENTARY SERVICE; STAGE 2 (3GPP TS 23.084 VERSION 14.0.0 RELEASE 14)

European Telecommunications Standards Institute