ITU Standardisation (ITU-T)


ITU-T owns 29 standards, which are:

Pubnum Title Date
E.123 Notation for national and international telephone numbers, e-mail addresses and web addresses 2001
E.164 The international public telecommunication numbering plan 2010
G.652 Characteristics of a single-mode optical fibre and cable 2016
G.703 Physical/electrical characteristics of hierarchical digital interfaces 2001
G.711 Pulse code modulation (PCM) of voice frequencies 1988
G.722 7 kHz Audio-Coding within 64 kbit/s 2012
G.722.1 (2005) Corrigendum 1 (06/08) Low-complexity coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss 2008
G.722.1c 14 kHz audio codec 2012
G.729 Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP) 2012
G. 993-2 Very high speed digital subscriber line transceivers 2 (VDSL2) 2011
H.248.1 Gateway Control Protocol (MGCP) v3 2013
H.263 Video coding for low bit rate communication 2005
H.264 Advanced video coding for generic audiovisual services 2017
H.320 Circuit-based Multimedia Comms. System 2004
H.323 Packet-based Multimedia Communication System 2001
J.241 Quality of service ranking and measurement methods for digital video services delivered over broadband IP networks 2005
M.2301 Performance objectives and procedures for provisioning and maintenance of IP-based networks 2002
T.120 Data Protocols for Multimedia Conferencing 2007
T.30 Procedures for document facsimile transmission in the general switched telephone network 2005
T.38 Procedures for real-time Group 3 facsimile communication over IP networks 2010
T.4 Standardization of group 3 facsimile terminals for document transmission 2003
T.6 Facsimile coding schemes and coding control functions for group 4 facsimile apparatus 1988
X.509 (10/16) Information technology - Open Systems Interconnection - The Directory: Public-key and attribute certificate frameworks 2016
X.841 Information Technology - Security Techniques - Security information objects for access control 2000
Y.1540 IP packet transfer and availability performance parameters 2016
Y.1541 Network performance objectives for IP-based services 2011
Y.1542 Framework for achieving end-to-end IP performance objectives 2010
G.722.1 Low-complexity coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss 2005
Y.1540 (12/19) Internet protocol data communication service - IP packet transfer and availability performance parameters 2019