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.

The ITU-T mission is to ensure the efficient and timely production of standards covering all fields of telecommunications on a worldwide basis, as well as defining tariff and accounting principles for international telecommunication services.

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.

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 .”

The description, in which the term cell is equivalent to packet in Turner's description is given by the ITU-T as follows: “ The continuous-state leaky bucket can be viewed as a finite capacity bucket whose real-valued content drains out at a continuous rate of 1 unit of content per time unit and whose content is increased by the increment T for each conforming cell ...

To make Turner ’ s description clearly aligned with ITU-T, the statement “ If the counter exceeds a threshold upon being incremented, the network discards the packet ” would have to be changed to something like “ If the counter would exceed a threshold to the bucket depth, T + τ, in the ITU-T description upon being incremented, the network discards the packet and the counter is not incremented ", i. e. it is only incremented when it is less than or equal to the limit value, τ, or at least T less than the bucket depth in the ITU-T description.

The description in terms of the continuous state leaky bucket algorithm is given by the ITU-T as follows: “ The continuous-state leaky bucket can be viewed as a finite capacity bucket whose real-valued content drains out at a continuous rate of 1 unit of content per time unit and whose content is increased by the increment T for each conforming cell ...

The description in terms of the continuous state leaky bucket algorithm is given by the ITU-T as follows: “ The virtual scheduling algorithm updates a Theoretical Arrival Time ( TAT ), which is the ' nominal ' arrival time of the cell assuming cells are sent equally spaced at an emission interval of T corresponding to the cell rate Λ 1 / T when the source is active.

“ ONT ” is an ITU-T term to describe a single-tenant ONU.

Many “ subjective video quality measurements ” are described in ITU-T recommendation BT. 500.

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.

In the mid 1980s, both CCITT ( now ITU-T ) and ISO had standardization groups for image coding: CCITT Study Group VIII ( SG8 )-Telematic Services and ISO TC97 SC2 WG8-Coding of Audio and Picture Information.

As the IETF standardization processes and IPR policies have the characteristics listed above by ITU-T, the IETF standards fulfill the ITU-T definition of " open standards.

In the mid 1980s, both CCITT ( now ITU-T ) and ISO had standardization groups for image coding: CCITT Study Group ( SG ) VIII ( Telematic Services ) and ISO TC97 SC2 WG8 ( Coding of Audio and Picture Information ).

The G. Lite standardization effort took a total of 11 months from start to finish, setting a new record for ANY standard effort within the ITU-T.

; Part 2: Video – compression codec for interlaced and non-interlaced video signals ( Also known as ITU-T Rec.

UUIDs are documented as part of ISO / IEC 11578: 1996 " Information technology – Open Systems Interconnection – Remote Procedure Call ( RPC )" and more recently in ITU-T Rec.

* ITU-T E. 118 – The International Telecommunication Charge Card 2006 ITU-T

The ITU-T H. 264 standard and the ISO / IEC MPEG-4 AVC standard ( formally, ISO / IEC 14496-10 – MPEG-4 Part 10, Advanced Video Coding ) are jointly maintained so that they have identical technical content.

In early 1998, the Video Coding Experts Group ( VCEG – ITU-T SG16 Q. 6 ) issued a call for proposals on a project called H. 26L, with the target to double the coding efficiency ( which means halving the bit rate necessary for a given level of fidelity ) in comparison to any other existing video coding standards for a broad variety of applications.

Further improvements to the original APON standard – as well as the gradual falling out of favor of ATM as a protocol – led to the full, final version of ITU-T G. 983 being referred to more often as broadband PON, or BPON.

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.

Parts 1 and 2 of MPEG-2 were developed in a collaboration with ITU-T, and they have a respective catalog number in the ITU-T Recommendation Series.

X. 25 was developed in the ITU-T ( formerly CCITT ) Study Group VII based upon a number of emerging data network projects.

The X. 500 series was developed by ITU-T, formerly known as CCITT, and first approved in 1988.

Common Channel Signaling protocols have been developed by major telephone companies and the ITU-T since 1975 ; the first international Common Channel Signaling protocol was defined by the ITU-T as Signalling System No. 6 ( SS6 ) in 1977.

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.

The standards developed by the JPEG and JBIG sub-groups are referred to as a joint development of ISO / IEC JTC 1 / SC 29 / WG 1 and ITU-T SG 16.

In section 7 of its RFC 2026, the IETF classifies specifications that have been developed in a manner similar to that of the IETF itself as being " open standards ," and lists the standards produced by ANSI, ISO, IEEE, and ITU-T as examples.

H. 264 / MPEG-4 AVC is a block-oriented motion-compensation-based codec standard developed by the ITU-T Video Coding Experts Group ( VCEG ) together with the International Organization for Standardization ( ISO )/ International Electrotechnical Commission ( IEC ) joint working group, the Moving Picture Experts Group ( MPEG ).

The standard was developed jointly in a partnership of VCEG and MPEG, after earlier development work in the ITU-T as a VCEG project called H. 26L.

JBIG have developed following standards, which were published by ISO / IEC and / or ITU-T:

The Open Systems Interconnection ( OSI ) protocols are a family of information exchange standards developed jointly by the ISO and the ITU-T starting in 1977.

This mechanism, defined in ITU-T standard I. 363. 1 and ATM Forum specification atm-vtoa-0078, was developed for carrying CBR services over ATM.

This mechanism, defined in ITU-T standard I. 363. 2, was developed for carrying variable bit rate ( VBR ) services over ATM.

H. 262 or MPEG-2 Part 2 ( formally known as ISO / IEC 13818-2, also known as MPEG-2 Video ) is a digital video compression and encoding standard developed and maintained jointly by ITU-T Video Coding Experts Group ( VCEG ) and ISO / IEC Moving Picture Experts Group ( MPEG ).

MPEG-4 Part 10 is commonly referred to as H. 264 or AVC, and was jointly developed by ITU-T and MPEG.

X. 500 is an international standard developed by the International Organization for Standardization ( ISO ) and the International Telecommunication Union ( ITU-T ).