HLR Home Location Register IMS IP Multimedia Sub-System IP Internet Protocol IPX ISUP ISDN User Part ITU International Telecommunication Union LE Local Exchange MGCP Media Gateway Control Protocol MNO Mobile Network Operator NRA National Regulatory Authorities OSS Operations Support Systems OTT Over-The-Top PBX Private Branch eXchange PCM Pulse Code Modulation PGW Packet data Network Gateway PSTN Public Switched Telephone Network QoS Quality of service? Q.SIG Q. Signalling RAN Radio Access Network RTCP Real Time Control Protocol RTP Real Time Protocol SDK Software Development Kit SG Signalling Gateway SIGTRAN Signalling Transport SIP Session Initiation Protocol SMS Short Message Service SP Service Provider TDM Time Division Multiplexing TE Transit Exchange TMG Trunking Media Gateway UAM User Access Module VLR Visitor Location Register VoIP Voice over Internet Protocol XMPP eXtensible Messaging and Presence Protocol 2FA Two Factor Authentication
HLR Home Location Register IMS IP Multimedia Sub-System IP Internet Protocol IPX ISUP ISDN User Part ITU International Telecommunication Union LE Local Exchange MGCP Media Gateway Control Protocol MNO Mobile Network Operator NRA National Regulatory Authorities OSS Operations Support Systems OTT Over-The-Top PBX Private Branch eXchange PCM Pulse Code Modulation PGW Packet data Network Gateway PSTN Public Switched Telephone Network QoS Quality of service? Q.SIG Q. Signalling RAN Radio Access Network RTCP Real Time Control Protocol RTP Real Time Protocol SDK Software Development Kit SG Signalling Gateway SIGTRAN Signalling Transport SIP Session Initiation Protocol SMS Short Message Service SP Service Provider TDM Time Division Multiplexing TE Transit Exchange TMG Trunking Media Gateway UAM User Access Module VLR Visitor Location Register VoIP Voice over Internet Protocol XMPP eXtensible Messaging and Presence Protocol 2FA Two Factor Authentication