The reference model given by the ITU-T and ATM Forum for UPC and NPC is the Generic Cell Rate Algorithm ( GCRA ), which is a version of the leaky bucket algorithm.

DTMF is standardized by ITU-T Recommendation Q. 23.

It was AT & T's registered trademark from September 4, 1962 to March 13, 1984, and is standardized by ITU-T Recommendation Q. 23.

This is described in ITU-T recommendation T. 31.

The relevant ITU-T recommendation is T. 32.

The next enhanced codec developed by ITU-T VCEG ( in partnership with MPEG ) after H. 263 is the H. 264 standard, also known as AVC and MPEG-4 part 10.

H. 263v2 ( also known as H. 263 +, or as the 1998 version of H. 263 ) is the informal name of the second edition of the ITU-T H. 263 international video coding standard.

The ITU Telecommunication Standardization Sector ( ITU-T ) is one of the three sectors ( divisions or units ) of the International Telecommunication Union ( ITU ); it coordinates standards for telecommunications.

* ITU-T is committed to “ bridging the standardization gap ” – disparities in the ability of developing countries, relative to developed ones, to access, implement, contribute to and influence international ICT standards.

On the ITU-T side ITU-T SG16 is the respective body.

Joint Video Team ( JVT ) is joint project between ITU-T SG16 / Q. 6 ( Study Group 16 / Question 6 )-VCEG ( Video Coding Experts Group ) and ISO / IEC JTC1 / SC29 / WG11-MPEG for the development of new video coding recommendation and international standard.

Joint Collaborative Team on Video Coding ( JCT-VC ) is a group of video coding experts from ITU-T Study Group 16 ( VCEG ) and ISO / IEC JTC 1 / SC 29 / WG 11 ( MPEG ).

MPEG-2 Systems is formally known as ISO / IEC 13818-1 and as ITU-T Rec.

MPEG-2 / Video is formally known as ISO / IEC 13818-2 and as ITU-T Rec.

( It is also known as ITU-T Rec.

The ITU-T G. hn standard, which provides high-speed local area networking over existing home wiring ( power lines, phone lines and coaxial cables ) is based on a TDMA scheme.

Open Systems Interconnection ( OSI ) is an effort to standardize networking that was started in 1977 by the International Organization for Standardization ( ISO ), along with the ITU-T.

The Common Management Information Service ( CMIS ) is the service interface specified in ITU-T Recommendation X. 710, ISO / IEC International Standard 9595 that is employed by OSI network elements for network management.

It defines the service interface that is implemented by the Common Management Information Protocol ( CMIP ) as specified in ITU-T Recommendation X. 711, ISO / IEC International Standard 9596-1.

This type of fiber is normalized by the International Telecommunications Union ITU-T at recommendation G. 651. 1.

The Intelligent Network ( IN ), is the standard network architecture specified in the ITU-T Q. 1200 series recommendations.

The ITU-T G. hn standard, which provides a way to create a high-speed ( up to 1 Gbit / s ) local area network using existing residential wiring ( power lines, telephone lines, and coaxial cables ), uses Selective Repeat ARQ to ensure reliable transmission over noisy media.

The ITU-T G. hn standard, which provides a way to create a high-speed ( up to 1 Gigabit / s ) Local area network using existing home wiring ( power lines, phone lines and coaxial cables ), uses Selective Repeat ARQ to ensure reliable transmission over noisy media.

The computational complexity is quite low ( 5. 5 floating-point MIPS ) for an efficient high-quality compressor, and the algorithmic delay end-to-end is 40 ms. A 14 kHz ( 32 ksps ) extension, G. 722. 1 / Annex C, was approved by ITU-T on May 14, 2005.

Today, nearly all commonly used video compression methods ( e. g., those in standards approved by the ITU-T or ISO ) apply a discrete cosine transform ( DCT ) for spatial redundancy reduction.

It was developed by the ITU-T Video Coding Experts Group ( VCEG ) in a project ending in 1995 / 1996 as one member of the H. 26x family of video coding standards in the domain of the ITU-T.

H. 263 was developed as an evolutionary improvement based on experience from H. 261, the previous ITU-T standard for video compression, and the MPEG-1 and MPEG-2 standards.

The OSI standards documents are available from the ITU-T as the X. 200-series of recommendations.

Related ITU-T standards include V. 24 ( circuit identification ) and V. 28 ( signal voltage and timing characteristics ).

The overlapped estimators have been accepted as the preferred Allan variance estimators in IEEE, ITU-T and ETSI standards for comparable measurements such as needed for telecommunication qualification.

* Certain ITU-T standards in the V series ( notably V. 24 and V. 35 )

* Certain ITU-T standards in the X series ( notably X. 21 and X. 25 )

The IN concepts, architecture and protocols were originally developed as standards by the ITU-T which is the standardization committee of the International Telecommunication Union, prior to this a number of telecommunications providers had proprietary IN solutions.

A complete description of the IN emerged in a set of ITU-T standards named Q. 1210 to Q. 1219, or Capability Set One ( CS-1 ) as they became known.

The PSTN is largely governed by technical standards created by the ITU-T, and uses E. 163 / E. 164 addresses ( usually called telephone numbers ) for addressing.

Both of these terms became outmoded in the late 20th century except in specialist usage, as most fax machines now use the digital ITU-T fax standards, which encode the image digitally over a QAM-modulated signal.

According to DoD documents, “ The MIL-STD-188 series may be based on, or make reference to, Joint Technical Architecture, American National Standards Institute ( ANSI ) standards, International Telecommunications Union-Telecommunication Standardization Sector ( ITU-T ) recommendations, North Atlantic Treaty Organization ( NATO ) Standardization Agreements ( STANAG ), and other standards wherever applicable .”

In the original specifications these were referred to as levels and also had a level number, whereas all ITU-T X. 25 recommendations and ISO 8208 standards released after 1984 refer to them as layers.

According to ITU-T standards, a pair of signals are plesiochronous if their significant instants occur at nominally the same rate, with any variation in rate being constrained within specified limits.

Standardized interoperability specifications such as the video coding standards produced by the MPEG and the ITU-T and the audio coding standards produced by the MPEG often specify only the bitstream format and the decoding process, while allowing individual encoder implementations to be designed using any methods whatsoever that produce bitstreams that conform to the specified bitstream format.

The Joint Photographic Experts Group is the joint committee between ISO / IEC JTC1 and ITU-T ( formerly CCITT ) that created the JPEG, JPEG 2000, and JPEG XR standards.

ISO / IEC JTC1 SC29 Working Group 1 ( working together with ITU-T Study Group 16-SG16 and previously also with Study Group 8-SG8 ) is responsible for the JPEG and JBIG standards.

The JPEG ( Joint Photographic Experts Group ) as a sub-group of ISO / IEC JTC 1 / SC 29 / WG 1-Coding of Still Pictures ( working as a joint team with ITU-T SG 16 ) have developed various standards, which have been published by ITU-T and / or ISO / IEC.