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Description:
This telecommunications collection contains more than 3,500 standards developed by the International Telecommunications Union (ITU). These documents are useful to suppliers, manufacturers, engineers, and researchers working in telecommunications. These standards define how telecommunication networks operate and interface. They provide for interconnectivity of networks enabling global telecommunication services. These standards cover topics such as: overall network operation, telephone service, service operation and human factors; transmission systems and media, digital systems and networks; audiovisual and multimedia systems; integrated services digital network; cable networks and transmission of television, sound programme and other multimedia signals; protection against interference; TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits; telephone transmission quality, telephone installations, local line networks; terminals for telematic services; data communication over the telephone network; and data networks and open system communications.

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Popular Standards from this Collection.

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ITU-T G.709

Interfaces for the optical transport network (OTN) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – General-Also Listed As Y.1331; Study Group 15

ITU-T G.707 CORR 2

Network node interface for the synchronous digital hierarchy (SDH) Corrigendum 2-Study Group 15; Also Listed as Y.1322 CORR 2; Covering Note: 02/14/2006

ITU-T G.7041 CORR 1

Generic framing procedure (GFP) Corrigendum 1-Study Group 15; Also Listed as Y.1303

ITU-T Y.1541 AMD 2

(Pre-Published) Amendment 2: New Appendix XI – Digital Circuit (ISDN) Emulation Requirements on IP-based Networks-Study Group 12

ITU-T G.984.3 AMD 3

Gigabit-capable Passive Optical Networks (G-PON): Transmission convergence layer specification Amendment 3-Study Group 15

ITU-T G.806 NOTE

Characteristics of transport equipment – Description methodology and generic functionality-Study Group 15

ITU-T G.729 ANNEX J

Coding of Speech at 8 kbit/s Using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) - General Aspects of Digital Transmission Systems-Study Group 16

ITU-T G.783 NOTE

Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks

ITU-T H.264 AMD 1

Support of additional colour spaces and removal of the High 4:4:4 Profile Amendment 1: Advanced video coding for generic audiovisual services-Study Group 16

ITU-T G.957

Optical interfaces for equipments and systems relating to the synchronous digital hierarchy-Study Group 15

ITU-T G.984.4 AMD 3

(Pre-Published) Gigabit-capable Passive Optical Networks (G-PON): ONT management and control interface specification Amendment 3

ITU-T P.862

Perceptual evaluation of speech quality (PESQ): An objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech codecs--SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Methods for objective and subjective assessment of quality-Study Group 12; Includes CD Available from Global Engineering

ITU-T Y.1731 ERTA 1

OAM functions and mechanisms for Ethernet based networks

ITU-T P.800.1

Mean Opinion Score (MOS) terminology-Study Group 12

ITU-T G.652

Characteristics of a single-mode optical fibre and cable

ITU-T G.959.1 NOTE

Optical transport network physical layer interfaces

ITU-T V.150.1 AMD 2

Modem-over-IP networks: Procedures for the end-to-end connection of V-series DCEs Amendment 2: ToIP and new SPRT data types support-Study Group 16

ITU-T H.262 CORR 1

Information technology – Generic coding of moving pictures and associated audio information: Video Technical Corrigendum 1-Study Group 16

ITU-T G.107 AMD 1

The E-model, a computational model for use in transmission planning Amendment 1: New Appendix II – Provisional impairment factor framework for wideband speech transmission-Study Group 12

ITU-T P.800

Methods for Subjective Determination of Transmission Quality - Series P: Telephone Transmission Quality; Methods for Objective and Subjective Assessment of Quality-Study Group 12; 38 pp

ITU-T G.711

Pulse Code Modulation (PCM) of Voice Frequencies - General Aspects of Digital Transmission Systems; Terminal Equipments-Study Groups XV and XVIII; 12 pp

ITU-T G.798

Characteristics of optical transport network hierarchy equipment functional blocks-Study Group 15; Covering Note: 05/2005

ITU-T Y.2012

(Pre-Published)Functional requirements and architecture of the NGN of Release 1

ITU-T Y.1540

Internet protocol data communication service – IP packet transfer and availability performance parameters SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE AND INTERNET PROTOCOL ASPECTS Internet protocol aspects – Quality of service and network performance

ITU-T G.704

Synchronous Frame Structures Used at 1544, 6312, 2048, 8448 and 44 736 kbit/s Hierarchical Levels - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - General-Study Group 15; 44 pp

ITU-T X.691 AMD 2

Information technology – ASN.1 encoding rules: Specification of Packed Encoding Rules (PER) Amendment 2: Time type support-Study Group 17

ITU-T G.703

Physical/Electrical Characteristics of Hierarchical Digital Interfaces - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Terminal Equipments - General-Study Group 15; Erratum 1: Covering Note: 07/20/2005

ITU-T V.34

A Modem Operating at Data Signalling Rates of up to 33 600 bit/s for Use on the General Switched Telephone Network and on Leased Point-to-Point 2-Wire Telephone-Type Circuits - Series V: Data Communication over the Telephone Network - Interfaces and Voiceband Modems-Study Group 16; 79 pp

ITU-T P.862 AMD 2

(Pre-Published) Perceptual evaluation of speech quality (PESQ): An objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech codecs Amendment 2: Revised Annex A: Reference implementations and conformance testing for Recommendations P.862, P.862.1 and P.862.2

ITU-T Y.1303 CORR 1

Generic framing procedure (GFP)-Study Group 15

ITU-T X.509

Information technology – Open Systems Interconnection – The Directory: Public-key and attribute certificate frameworks-Study Group 17

ITU-T G.114

One-way transmission time SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS International telephone connections and circuits – General Recommendations on the transmission quality for an entire international telephone connection-Study Group 12

ITU-T G.653

Characteristics of a dispersion-shifted single-mode optical fibre and cable-Study Group 15

ITU-T G.729.1

(Pre-Published) G.729 based Embedded Variable bit-rate coder: An 8-32 kbit/s scalable wideband coder bitstream interoperable with G.729

ITU-T G.691

Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers

ITU-T H.264.1

Conformance specification for H.264 advanced video coding-Study Group 16

ITU-T G.805

Generic Functional Architecture of Transport Networks Series G: Transmission Systems and Media, Digital Systems and Networks Digital Networks - General Aspects-Study Group 13

ITU-T T.38

(Pre-Published) Procedures for real-time Group 3 facsimile communication over IP networks-Study Group 16

ITU-T Y.2012 SUPP 1

(Pre-Published) Session/border control (S/BC) functions Supplement 1

ITU-T G.992.3 AMD 2

Asymmetric digital subscriber line (ADSL) transceivers – 2 (ADSL2) Amendment 2-Study Group 15

ITU-T H.264.2

Reference software for H.264 advanced video coding-Study Group 16

ITU-T P.862.1

Mapping function for transforming P.862 raw result scores to MOS-LQO SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Methods for objective and subjective assessment of quality-Study Group 12

ITU-T P.862 AMD 1

Perceptual evaluation of speech quality (PESQ): An objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech codecs Amendment 1: Revised Annex A: Source code for reference implementation and conformance tests SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Methods for objective and subjective assessment of quality-Study Group 12

ITU-T Q.931

ISDN User-Network Interface Layer 3 Specification for Basic Call Control - Series Q: Switching and Signalling Digital Subscriber Signalling System No. 1 - Network Layer-Study Group 11; Covering Note: Febreuary 14, 2003

ITU-T G.8251

The control of jitter and wander within the optical transport network (OTN) Series G: Transmission Systems and Media, Digital Systems and Networks Digital networks – Quality and availability targets

ITU-T G.803

Architecture of Transport Networks Based on the Synchronous Digital Hierarchy (SDH) - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Digital Networks - General Aspects-Study Group 13

ITU-T G.975.1

Forward error correction for high bit-rate DWDM submarine systems

ITU-T V.25

Automatic Answering Equipment and General Procedures for Automatic Calling Equipment on the General Switched Telephone Network Including Procedures for Disabling of Echo Control Devices for Both Manually and Automatically Established Calls - Series V: Data Communication over the Telephone Network Interfaces and Voiceband Modems-Study Group 14; 15 pp

ITU-T Y.2001

General overview of NGN SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Next Generation Networks – Frameworks and functional architecture models-Study Group 13

ITU-T G.168

Digital Network Echo Cancellers Series G: Transmission Systems and Media, Digital Systems and Networks International Telephone Connections and Circuits - Apparatus Associated with Long-Distance Telephone Circuits-Study Group 15

ITU-T G.655

Characteristics of a non-zero dispersion-shifted single-mode optical fibre and cable-Study Group 15

ITU-T G.711 APP I

Pulse Code Modulation (PCM) of Voice Frequencies - Appendix I: A High Quality Low-Complexity Algorithm for Packet Loss Concealment with G.711 - Series G: Transmission Systems and Media, Digital Systems and Networks - Digital Transmission Systems - Terminal Equipments - Coding of Analogue Signals by Pulse Code Modulation-Study Group XVI; 24p

ITU-T G.711 APP II

Pulse Code Modulation (PCM) of Voice Frequencies Appendix II: A Comfort Noise Payload Definition for ITU-T G.711 Use in Packet-Based Multimedia Communication Systems - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - Coding of Analogue Signals by Pulse Code Modulation-Study Group 16

ITU-T H.222.0

Information Technology - Generic Coding of Moving Pictures and Associated Audio Information: Systems Series H: Audiovisual and Multimedia Systems Infrastructure of Audiovisual Services - Transmission Multiplexing and Synchronization

ITU-T G.694.1

Spectral grids for WDM applications: DWDM frequency grid Series G: Transmission Systems and Media, Digital Systems and Networks Transmission media characteristics - Characteristics of optical components and subsystems-Study Group 15

ITU-T G.874 NOTE

Management aspects of the optical transport network element Series G: Transmission Systems and Media, Digital Systems and Networks Digital networks - Optical transport networks

ITU-T G.984.2 AMD 1

Gigabit-capable Passive Optical Networks (G-PON): Physical Media Dependent (PMD) layer specification Amendment 1: New Appendix III – Industry best practice for 2.488 Gbit/s downstream, 1.244 Gbit/s upstream G-PON-Study Group 15

ITU-T X.501 NOTE

Information technology – Open Systems Interconnection – The Directory: Models -Study Group 17

ITU-T G.671 AMD 2

Transmission characteristics of optical components and subsystems Amendment 2

ITU-T G.984.1

Gigabit-capable Passive Optical Networks (GPON): General characteristics SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system – Optical line systems for local and access networks-Study Group 15

ITU-T Y.1540 AMD 1

Internet protocol data communication service - IP packet transfer and availability performance parameters Amendment 1: New Appendix VIII: Background on IP service availability SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE AND INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Internet protocol aspects – Quality of service and network performance-Study Group 13

ITU-T G.7042

Link capacity adjustment scheme (LCAS) for virtual concatenated signals-study group 15

ITU-T G.784

Synchronous Digital Hierarchy (SDH) Management Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - Principal Characteristics of Multiplexing Equipment for the Synchronous Digital Hierarchy-Study Group 15; 56 pp

ITU-T G.975.1 CORR 1

Forward error correction for high bit-rate DWDM submarine systems Corrigendum 1-Study Group 15

ITU-T O.150

General Requirements for Instrumentation for Performance Measurements on Digital Transmission Equipment - Series O: Specifications of Measuring Equipment; Equipment for the Measurement of Digital and Analogue/Digital Parameters-Study Group 4; 24 pp

ITU-T P.862.3

Application guide for objective quality measurement based on Recommendations P.862, P.862.1 and P. 862.2

ITU-T G.654

Characteristics of a cut-off shifted single-mode optical fibre and cable-Study Group 15

ITU-T G.726

40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM) (Study Group XV) 60 pp

ITU-T G.813

Timing characteristics of SDH equipment slave clocks (SEC) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – Design objectives for digital networks-Study Group 15

ITU-T G.826

End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – Quality and availability targets-Study Group 13

ITU-T G.975

Forward Error Correction for Submarine Systems Series G: Transmission Systems and Media, Digital Systems and Networks Digital Sections and Digital Line System - Optical Fibre Submarine Cable Systems-Study Group 15; 24 pgs

ITU-T P.862.2

Wideband extension to Recommendation P.862 for the assessment of wideband telephone networks and speech codecs

ITU-T G.874.1

Optical transport network (OTN): Protocol-neutral management information model for the network element view Series G: Transmission Systems and Media, Digital Systems and Networks Digital networks - Optical transport networks-Study Group 15

ITU-T SERIES G SUPP 43

(Pre-Published) Transport of IEEE 10G Base-R in Optical Transport Networks (OTN)

ITU-T X.520 CORR 2

Information Technology - Open Systems Interconnection - The Directory: Selected Attribute Types Technical Corrigendum 2-Study Group 17

ITU-T X.680 AMD 4

(Pre-Published) Amendment 4: PER encoding instructions (to ITU-T Rec. X.680 (2002) ISO/IEC 8824-1:2002)

ITU-T G.726 CORR 1

40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM) Corrigendum 1: Correction to Annex A: Extensions of Recommendation G.726 for use with uniform-quantized input and output-Study Group 16

ITU-T K.21

Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents SERIES K: PROTECTION AGAINST INTERFERENCE-Study Group 5; Covering Note: January 16, 2004

ITU-T O.150 CORR 1

General Requirements for Instrumentation for Performance Measurements on Digital Transmission Equipment Corrigendum 1 Series O: Specifications of Measuring Equipment Equipment for the Measurement of Digital and Analogue/Digital Parameters-Study Group 4

ITU-T V.14 (REV 1)

Transmission of Start-Stop Characters over Synchronous Bearer Channels (Study Group XVII) 7 pp

ITU-T Y.1221

Traffic control and congestion control in IP based networks SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE AND INTERNET PROTOCOL ASPECTS Internet protocol aspects - Architecture, access, network capabilities and resource management-Study Group 13

ITU-T G.698.1

Multichannel DWDM applications with single-channel optical interfaces-Study Group 15

ITU-T Q.2931 AMD 5

Digital Subscriber Signalling System No. 2 – User-Network Interface (UNI) layer 3 specification for basic call/connection control Amendment 5: Support for the International Emergency Preference Scheme-Study Group 11

ITU-T Q.921

ISDN User-Network Interface-Data Link Layer Specification - Series Q: Switching and Signalling; Digital Subscriber Signalling System No. 1 - Data Link Layer-Study Group 11; 269 pp

ITU-T Y.2011

General principles and general reference model for next generation networks SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Next Generation Networks – Frameworks and functional architecture models-Study Group 13

ITU-T G.723.1

Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 and 6.3 kbit/s - General Aspects of Digital Transmission Systems (Study Group 15) 31 pp

ITU-T G.983.1

Broadband optical access systems based on Passive Optical Networks (PON)-Covering Note: 03/16/2006

ITU-T H.263

Video coding for low bit rate communication Infrastructure of audiovisual services – Coding of moving video-study Group 16

ITU-T G.652

Characteristics of a single-mode optical fibre and cable SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Transmission media characteristics – Optical fibre cables-Study Group 15

ITU-T G.781

Synchronization Layer Function Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - Principal Characteristics of Multiplexing Equipment for the Synchronous Digital Hierarchy-Group 15; 126 pp

ITU-T G.984.2

Gigabit-capable Passive Optical Networks (GPON): Physical Media Dependent (PMD) layer specification SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system – Optical line systems for local and access networks-Study Group 15

ITU-T P.501

Test Signals for Use in Telephonometry - Series P: Telephone Transmission Quality, Local Line Networks Objective Measuring Apparatus

ITU-T Y.2171

Admission control priority levels in Next Generation Networks-Study Group 13

ITU-T G.8010 AMD 1

(Pre-Published) Amendment 1: Architecture of Ethernet layer networks-Also listed as Y.1306

ITU-T G.8012 AMD 1

Ethernet UNI and Ethernet NNI Amendment 1-Study Group 15

ITU-T H.264.1 CORR 1

(Pre-Published) Conformance specification for H.264 advanced video coding

ITU-T V.32

Family of 2-Wire, Duplex Modems Operating at Data Signalling Rates of up to 9600 bit/s for Use on the General Switched Telephone Network and on Leased Telephone-Type Circuits - Study Group XVII) 26 pp

ITU-T G.872 COR 1

Architecture of Optical Transport Networks Corrigendum 1 Series G: Transmission Systems and Media, Digital Systems and Networks Digital Networks - Optical Transport Networks-Study Group 15

ITU-T H.225.0

Call signalling protocols and media stream packetization for packet-based multimedia communication systems

ITU-T G.656

Characteristics of a fibre and cable with non-zero dispersion for wideband optical transport-Study Group 15

ITU-T G.809

Functional architecture of connectionless layer networks SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – General aspects-Study Group 13

ITU-T E.164

The international public telecommunication numbering plan-Study Group 2

ITU-T E.212 AMD 1

OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS International operation – Maritime mobile service and public land mobile service The international identification plan for mobile terminals and mobile users Amendment 1: Annexes to the international identification plan for mobile terminals and mobile users-Study Group 2

ITU-T G.8251 AMD.1

(PRE-PUBLISHED) The control of jitter and wander within the optical transport network (OTN) Series G: Transmission Systems and Media, Digital Systems and Networks Digital networks – Quality and availability targets-Amendment 1

ITU-T G.841

Types and Characteristics of SDH Network Protection Architectures - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Digital Networks - SDH Network Characteristics-Study Group 15; 140 pp

ITU-T G.958

Digital Line Systems Based on the Synchronous Digital Hierarchy for Use on Optical Fibre Cables - Digital Sections and Digital Line Systems (Study Group 15) 25 pp

ITU-T G.983.3

A Broadband Optical Access System with Increased Service Capability by Wavelength Allocation Series G: Transmission Systems and Media, Digital Systems and Networks Digital Sections and Digital Line Systems - Optical Line Systems for Local and Access Networks-Study Group 15

ITU-T H.245 NOTE

Control protocol for multimedia communication

ITU-T Q.763

Signalling System No. 7 - ISDN User Part Formats and Codes - Series Q: Switching and Signalling - Specifications of Signalling System No. 7 - ISDN User Part-Study Group 11

ITU-T H.323

Packet-based multimedia communications systems SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services – Systems and terminal equipment for audiovisual services-Study Group 16

ITU-T J.83 AMD 1

Digital multi-programme systems for television, sound and data services for cable distribution Amendment 1: Amendment to Annex B-Study Group 9

ITU-T M.3400

TMN Management Functions Series M: TMN and Network Maintenance: International Transmission Systems, Telephone Circuits, Telegraphy, Facsimile and Leased Circuits Telecommunications Management Network-Study Group 4; 110 pp

ITU-T P.79

Calculation of Loudness Ratings for Telephone Sets - Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks - Measurements Related to Speech Loudness-Study Group 12; COVERING NOTE: 05/25/2000; COVERING NOTE: 01/27/2005

ITU-T Y.1730

Requirements for OAM functions in Ethernet-based networks and Ethernet services SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Internet protocol aspects – Operation, administration and maintenance-Study Group 13

ITU-T Y.2801

(Pre-published) Mobility Management Requirements for NGN

ITU-T G.722

7 kHz Audio-Coding within 64 kBit/s - General Aspects of Digital Transmission Systems; Terminal Equipments-Study Group XV and XVIII; Covering Note May 30, 2003

ITU-T G.726 APPEND II TV

Description of the Digital Test Sequences for the Verification of the G.726 40, 32, 24 and 16 kbit/s ADPCM Algorithm - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - Coding of Analogue Signals by Methods Other than PCM-16 pp

ITU-T G.8011

Ethernet over Transport - Ethernet services framework SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – General aspects-Study Group 15; Also Listed as Y.1307

ITU-T G.870

Terms and definitions for optical transport networks (OTN) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – Optical transport networks-Also Listed as Y.1352

ITU-T G.872 AMD 1

Architecture of optical transport networks Amendment 1 SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – Optical transport networks-Study Group 15

ITU-T M.3010 AMD 2

Principles for a telecommunications management network Amendment 2: Additions and corrections - Telecommunications management network

ITU-T G.726 ANNEX A

40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM) - Annex A: Extensions of Recommendation G.726 for Use with Uniform- Quantized Input and Output - General Aspects of Digital Transmission Systems (Study Group 15) 8 pp

ITU-T G.726 ANNEX B

40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM) Annex B. Packet format, capability indentifier and capability parameters for H.245 signalling SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments - Coding of analogue signals by methods other than PCM-Study Group 16

ITU-T G.8110.1

(Pre-Published) Architecture of Transport MPLS (T-MPLS) Layer Network-Also Known as Y.1370.1

ITU-T G.873.1

Optical Transport Network (OTN): Linear protection-Study Group 15

ITU-T G.992.1

Asymmetric Digital Subscriber Line (ADSL) Transceivers - Series G: Transmission Systems and Media, Digital Systems and Networks - Digital Transmission Systems - Digital Sections and Digital Line System - Access Networks

ITU-T M.3010

Principles for a Telecommunications Management Network Series M: TMN and Network Maintenance: International Transmission Systems, Telephone Circuits, Telegraphy, Facsmile and Leased Circuits; Telecommnications Management Network-Study Group 4

ITU-T M.3100

Generic Network Information Model-Study Group 4

ITU-T Q.932

Digital Subscriber Signalling System No. 1 - Generic Procedures for the Control of ISDN Supplementary Services - Series Q: Switching and Signalling - Digital Subscriber Signalling System No.1 - Network Layer-Study Group 11; 126 pp

ITU-T X.200

Information Technology - Open Systems Interconnection - Basic Reference Model: the Basic Model - Data Networks and Open System Communications Open Systems Interconnection - Model and Notation 64 pp

ITU-T G.114 APPENDIX 11

(Pre-Published) Appendix II: Guidance on one-way delay for Voice over IP SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS International telephone connections and circuits – General Recommendations on the transmission quality for an entire international telephone connection

ITU-T G.691

(Pre-Published) Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers

ITU-T G.8081 AMD 1

Terms and definitions for Automatically Switched Optical Networks (ASON) Amendment 1-Study Group 15

ITU-T K.20

Resistibility of telecommunication equipment installed in a telecommunications centre to overvoltages and overcurrents SERIES K: PROTECTION AGAINST INTERFERENCE-Study Group 5; Cover Note: January 16, 2004

ITU-T Q.850

Usage of Cause and Location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN User Part - Series Q: Switching and Signalling - Digital Subscriber Signalling System No. 1 - General-Study Group 11; 32 pp

ITU-T T.30

Procedures for document facsimile transmission in the general switched telephone network-Study Group 16

ITU-T V.42

SERIES V: DATA COMMUNICATION OVER THE TELEPHONE NETWORK Error control Error-correcting procedures for DCEs using asynchronous-to-synchronous conversion-Study Group 14

ITU-T Y.1221 AMD 1

Traffic control and congestion control in IP-based networks Amendment 1: Extensions to transfer capabilities SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Internet protocol aspects – Architecture, access, network capabilities and resource management-Study Group 13

ITU-T G.798 IMP

Implementers’ Guide for ITU-T Rec. G.798 (06/2004) Characteristics of optical transport network hierarchy equipment functional blocks-Study Group 15

ITU-T G.827

Availability performance parameters and objectives for end-to-end international constant bit-rate digital paths SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – Quality and availability targets-Study Group 13

ITU-T H.261

Video Codec for Audiovisual Services at p x 64 kbits - Line Transmission of Non-Telephone Signals-Study Group XV; 28 pp

ITU-T P.79 ANNEX G

Calculation of Loudness Ratings for Telephone Sets Annex G: Wideband Loudness Rating Algorithm Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks Measurements Related to Speech Loudness-Study Group 12

ITU-T V.25 TER

Serial Asynchronous Automatic Dialling and Control - Series V: Data Communication over the Telephone Network Interfaces and Voiceband Modems-Study Group 16; 113 pp; Renumbered as V.250 (2/98); but not Republished

ITU-T G.651

Characteristics of a 50/125 Micrometer Multimode Graded Index Optical Fibre Cable - Series G: Transmission Systems and Media, Digital Systems and Networks - Transmission Media Characteristics - Optical Fibre Cables-Study Group 15; 39 pp

ITU-T G.694.2

Spectral grids for WDM applications: CWDM wavelength grid Series G: Transmission Systems and Media, Digital Systems and Networks Transmission media characteristics - Characteristics of optical components and subsystems-Study Group 15

ITU-T G.726 APPENDIX III

Comparison of ADPCM Algorithms - Appendix III to ITU-T Recommendation G.726 - General Aspects of Digital Transmission Systems-Study Group 15; 44 pp

ITU-T G.8080

Architecture for the automatically switched optical network (ASON)-Study Group 15

ITU-T G.812

Timing requirements of slave clocks suitable for use as node clocks in synchronization networks-Covering Note: 03/2005

ITU-T G.972

Definition of terms relevant to optical fibre submarine cable systems SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system – Optical fibre submarine cable systems-Study Group 15

ITU-T H.324 AMD 1

Terminal for low bit-rate multimedia communication Amendment 1: New Annex K

ITU-T K.44

Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents – Basic Recommendation SERIES K: PROTECTION AGAINST INTERFERENCE-Study Group 5

ITU-T M.3010 AMD 1

Principles for a telecommunications management network Amendment 1: TMN conformance and TMN compliance SERIES M: TMN AND NETWORK MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS, TELEPHONE CIRCUITS, TELEGRAPHY, FACSIMILE AND LEASED CIRCUITS Telecommunications management network-Amendment 1

ITU-T P.76

Determination of Loudness Ratings; Fundamental Principles - Telephone Transmission Quality (Study Group XII) 12 pp

ITU-T Y.1221 AMD 2

Traffic control and congestion control in IP-based networks Amendment 2: Further extension to transfer capabilities-Study Group 12

ITU-T G.650.2

Definitions and test methods for statistical and non-linear related attributes of single-mode fibre and cable-Study Group 15; Covering Note: 10/03/2005

ITU-T G.7712

Architecture and specification of data communication network SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Operations, administration and maintenance features of transmission equipment-Also Shown on Y.1703

ITU-T G.841

Types and Characteristics of SDH Network Protection Architectures Series G: Transmission Systems and Media, Digital Systems and Networks Digital networks - SDH network characteristics-Study Group 15; Corrigendum

ITU-T G.870 AMD 1

Terms and definitions for optical transport networks (OTN) Amendment 1-Study Group 15; Also Listed as Y.1352

ITU-T G.9954

Phoneline networking transceivers – Enhanced physical, media access, and link layer specifications-Study Group 15

ITU-T O.151

Error Performance Measuring Equipment Operating at the Primary Rate and Above - Specifications of Measuring Equipment (Study Group IV) 8 pp

ITU-T P.310

Transmission characteristics for telephone band (300-3400 Hz) digital telephones SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Subscribers' lines and sets-Study Group 12

ITU-T P.50 APP 1

Artificial Voices - Telephone Transmission Quality, Telephone Installations, Local Line Networks - Objective Measuring Apparatus-Appendix 1: Test Signals; Study Group 12; 60 pp

ITU-T P.501 AMD 1

Test signals for use in telephonometry Amendment 1: New annexes A and B-Study Group 12

ITU-T Q.1112

Procedures for Interworking between INMARSAT Standard-B System and the International Public Switched Telephone Network/ISDN - Interworking with Satellite Mobile Systems (Study Group XI) 60 pp

ITU-T V.90

A Digital Modem and Analogue Modem Pair for Use on the Public Switched Telephone Network (PSTN) at Data Signalling Rates of Up to 56 000 BIT/S Downstream and Up to 33 600 BIT/S Upstream - Series V: Data Communication Over the Telephone Network - Simultaneous Transmission of Data and Other Signals-52 pp

ITU-T X.500

Information technology – Open Systems Interconnection – The Directory: Overview of concepts, models and services

ITU-T Y.1221 APPENDIX III

(Pre-Published) Guidelines for support of services using IP transfer capabilities in differentiated services environment Appendix III: SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Internet protocol aspects – Architecture, access, network capabilities and resource management

ITU-T G.650.1

Definitions and test methods for linear, deterministic attributes of single-mode fibre and cable Series G: transmission Systems and Media, Digital Systems and Networks Transmission media characterisistics - Optical fibre cables-Study Group 15

ITU-T G.663

Application Related Aspects of Optical Amplifier Devices and Sub-Systems Series G: Transmission Systems and Media, Digital Systems and Networks Transmission Media Characteristics - Characteristics of Optical Components and Subsystems-Study Group 15

ITU-T G.692 AMD 1

Optical interfaces for multichannel systems with optical amplifiers SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Transmission media characteristics – Characteristics of optical components and subsystems-Study Group 15

ITU-T G.723.1 ANNEX C

Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 and 6.3 kbit/s Annex C: Scalable Channel Coding Scheme for Wireless Applications - Series G: Transmission Systems and Media Digital Transmission Systems - Terminal Equipments - Coding of Analogue Signals by Methods Other Than PCM-Study Group 15; 24 pp

ITU-T G.7715.1

ASON routing architecture and requirements for link state protocols SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Operations, administration and maintenance features of transmission equipment-Study Group 15; Also Listed as Y.1706.1

ITU-T G.780 AMD 1

Terms and definitions for synchronous digital hierarchy (SDH) networks-Also Listed as Y.1351; Study Group 15

ITU-T G.828

Error Performance Parameters and Objectives for International, Constant Bit Rate Synchronous Digital Paths - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Digital Networks - Quality and Availability Targets-Study Group 13

ITU-T G.992.1 ANNEX H

Asymmetric Digital Subscriber Line (ADSL) Tranceivers Annex H: Specific Requirements for a Sychronized Symmetrical DSL (SSDSL) System Operating in the Same Cable Binder as ISDN as Defined in ITU-T G.961 Appendix III Series G: Transmission Systems and Media, Digital Systems and Networks Digital Sections and Digital Line System - Access Networks-Study Group 15

ITU-T H.246

Interworking of H-series multimedia terminals with H-series multimedia terminals and voice/voiceband terminals on GSTN, ISDN and PLMN-Study Group 16

ITU-T O.172

Jitter and Wander Measuring Equipment for Digital Systems which are Based on the Synchronous Digital Hierarchy (SDH)-Study Group 4; Covering Note: Erratum: 10/2005

ITU-T Q.773

Transaction Capabilities Formats and Encoding - Series Q: Switching and Signalling Specifications of Signalling System No. 7 - Transaction Capabilities Application Part-Study Group 11; 38 pp

ITU-T V.22 BIS

2400 Bits per Second Duplex Modem Using the Frequency Division Technique Standardized for Use on the General Switched Telephone Network and on Point-to-Point 2-Wire Leased Telephone-Type Circuits - Data Communication over the Telephone Network-Study Group XVII; 16 pp

ITU-T X.690

Information Technology - ASN.1 Encoding Rules: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER) - Series X: Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1)-Study Group 17

ITU-T G.109

Definition of Categories of Speech Transmission Quality - Series G: Transmission Systems and Media, Digital Systems and Networks International Telephone Connections and Circuits - General Definitions-Study Group 12; 11 pp

ITU-T G.666

Characteristics of PMD compensators and PMD Compensating Receivers-Study Group 15

ITU-T G.708

Sub STM-0 Network Node Interface for The Synchronous Digital Hierarchy (SDH) Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - General-Study Group 15; 22 pp

ITU-T G.722.1

Low-complexity coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss-Study Group 16

ITU-T G.722.2 CORR 1

Wideband coding of speech at around 16 kbit/s using Adaptive Multi-Rate Wideband (AMR-WB) Corrigendum 1 - Digital terminal equipments – Coding of analogue signals by methods other than PCM

ITU-T G.732

Characteristics of Primary PCM Multiplex Equipment Operating at 2048 kbit/s - General Aspects of Digital Transmission Systems; Terminal Equipments (Study Groups XV and XVIII) 7 pp

ITU-T G.798

Characteristics of optical transport network hierarchy equipment functional blocks SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Other terminal equipment-Study Group 15

ITU-T G.8110

MPLS layer network architecture-Study Group 15; Also listed as Y.1370

ITU-T G.983.5

A Broadband Optical Access System with Enhanced Survivability - Series G: Transmission Systems and Media, Digital Systems and Networks - Digital Sections and Digital Line Systems - Optical Line Systems for Local and Access Networks

ITU-T G.992.5 AMD 2

Asymmetric Digital Subscriber Line (ADSL) transceivers – Extended bandwidth ADSL2 (ADSL2plus)-Study Group 15

ITU-T H.263 APPENDIX III

Video Coding for Low Bit Rate Communication Appendix III: Examples for H.263 Encoder/Decoder Implementations Series H: Audiovisual and Multimedia Systems Infrastructure of Audiovisual Services - Coding of Moving Video-Study Group 16

ITU-T H.323 ANNEX M3

Packet Based Multimedia Communications Systems Annex M3: Tunneling of DSS1 Through H.323 Series H: Audiovisual and Multimedia Systems Infrastructure of Audiovisual Services - Systems and Terminal Equipment for Audiovisual Services-Study Group 16

ITU-T I.430

Basic User-Network Interface - Layer 1 Specification - Integrated Services Digital Network (ISDN) ISDN User-Network Interfaces (Study Group 13) 106 pp

ITU-T M.3050 SUPP 1

Enhanced Telecom Operations Map (eTOM) Supplement 1: ITIL application note

ITU-T O.151 CORR 1

Error performance measuring equipment operating at the primary rate and above Corrigendum 1 SERIES O: SPECIFICATIONS OF MEASURING EQUIPMENT Equipment for the measurement of digital and analogue/digital parameters-Study Group 4

ITU-T P.50

Artificial Voices - Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks - Objective Measuring Apparatus-Study Group 12; Covering Note Erratum May 25, 2000

ITU-T P.563

Single-ended method for objective speech quality assessment in narrow-band telephony applications SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Objective measuring apparatus-Study Group 12

ITU-T Q.772

Transaction Capabilities Information Element Definitions - Series Q: Switching and Signalling Specifications of Signalling System No.7 - Transaction Capabilities Application Part-Study Group 11; 14 pp

ITU-T T.4

Standardization of Group 3 facsimile terminals for document transmission SERIES T: TERMINALS FOR TELEMATIC SERVICES-Study Group 16

ITU-T X.511 CORR 2

Information technology – Open Systems Interconnection – The Directory: Abstract service definition Technical Corrigendum 2-Study Group 17

ITU-T Y.1281

Mobile IP services over MPLS SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Internet protocol aspects – architecture, access, network capabilities and resource management-Study Group 13

ITU-T Y.2201

(Pre-Published) NGN release 1 requirements

ITU-T G.692

Optical Interfaces for Multichannel Systems with Optical Amplifiers - Series G: Transmission Systems and Media, Digital Systems and Networks - Transmission Media Characteristics - Characteristics of Optical Components and Sub-Systems-Study Group 15; 40 pp

ITU-T G.783 AMD 1

(Pre-Published) Amendment 1: SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Principal characteristics of multiplexing equipment for the synchronous digital hierarchy

ITU-T G.8021

Characteristics of Ethernet transport network equipment functional blocks SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – General aspects-Study Group 15; Also Listed as Y.1341

ITU-T H.323

(Pre-Published) Packet-based multimedia communications systems

ITU-T H.323 AMD 1

Packet-based multimedia communications systems Amendment 1: Revised Annex D – Real-time facsimile over H.323 systems: Transport of facsimile signals using RTP

ITU-T P.340

Transmission Characteristics and Speech Quality Parameters of Hands-Free Terminals Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks Subscribers' Lines and Sets-Study Group 12; Covering Note: March 31, 2004

ITU-T P.79 CORR.1

Calculation of Loudness Ratings for Telephone Sets-Corrigendum 1

ITU-T P.862.2

(Pre-Published) Wideband extension to Recommendation P.862 for the assessment of wideband telephone networks and speech codecs

ITU-T V.24

List of Definitions for Interchange Circuits between Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE) Series V: Data Communication over the Telephone Network Interfaces and Voiceband Modems-Study Group 16

ITU-T Y.1291

An architectural framework for support of Quality of Service in packet networks SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Internet protocol aspects – Architecture, access, network capabilities and resource management-Study Group 13

ITU-T Y.1542

Framework for achieving end-to-end IP performance objectives-Study Group 12

ITU-T G.108

Application of the E-Model: A Planning Guide Series G: Transmission Systems and Media, Digital Systems and Networks International Telephone Connections and Circuits - General Definitions-Study Group 12; 141 pp; Covering Note December 7, 2000

ITU-T G.723.1 ANNEX A

Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 and 6.3 kbit/s Annex A: Silence Compression Scheme - Series G: Transmission Systems and Media Digital Transmission Systems - Terminal Equipments - Coding of Analogue Signals by Methods Other Than PCM-Study Group 15; 23 pp

ITU-T G.723.1 ANNEX B

Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 and 6.3 kbit/s Annex B: Alternative Specification Based on Floating Point Arithmetic - Series G: Transmission Systems and Media Digital Transmission Systems - Terminal Equipments - Coding of Analogue Signals by Methods Other Than PCM-Study Group 15; 9 pp

ITU-T G.780

Terms and definitions for Synchronous Digital Hierarchy (SDH) networks SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Principal characteristics of multiplexing equipment for the synchronous digital hierarchy-Study Group 15; Also Listed as Y.1351

ITU-T G.825

Control of Jitter and Wander within Digital Networks Which are Based on the Synchronous Digital Hierarchy (SDH) Series G: Transmission Systems and Media, Digital Systems and Networks Digital Networks - Quality and Availability Targets-Study Group 13; Covering Note contains Erratum 08/13/2001

ITU-T G.8251 CORR 1

SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – Quality and availability targets The control of jitter and wander within the optical transport network (OTN)-Study Group 15

ITU-T H.241

(Pre-Published) Extended video procedures and control signals for H.300-series terminals

ITU-T H.323 IMP

Implementors Guide for Recommendations of the H.323 System: (

ITU-T I.256. 2A

Advice of Charge: Charging Information at Call Set-Up Time (AOC-S) - Integrated Services Digital Network (ISDN) - Service Capabilities - Supplementary Services in ISDN (Study Group I) 12 pp

ITU-T J.183

Pre-published Time Dision Multiplexing of Multiple MPEG-2 Transport Streams Over Cable Television Systems Series J: Transmission of Television, Sound Programme and Other Multimedia Signals

ITU-T J.185

Transmission equipment for transferring multi-channel television signals over optical access networks by FM conversion SERIES J: CABLE NETWORKS AND TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA SIGNALS Miscellaneous

ITU-T K.34

Classification of electromagnetic environmental conditions for telecommunication equipment – Basic EMC Recommendation SERIES K: PROTECTION AGAINST INTERFERENCE-Study Group 5

ITU-T P.501 ANNEX A

(Pre-Published) Test Signals for TCL tests Annex A: SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Objective measuring apparatus

ITU-T P.501 ANNEX B

(Pre-Published) Speech Files and Noise Sequences Annex B: SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Objective measuring apparatus

ITU-T Q.771

Functional Description of Transaction Capabilities - Series Q: Switching and Signalling Specifications of Signalling System No. 7 - Transaction Capabilities Application Part-Study Group 11; 37 pp

ITU-T Q.954.1

Stage 3 Description for Multiparty Supplementary Services Using DSS 1 Clause 1 - Conference Calling Clause 2 - Three-Party Service - Digital Subscriber Signalling System No. 1 Stage 3 Description for Supplementary Services Using DSS 1-Study Group XI; 65 pp; Covering Note June 1999

ITU-T V.25 BIS

Synchronous and Asynchronous Automatic Dialling Procedures on Switched Networks - Series V: Data Communication over the Telephone Network Interfaces and Voiceband Modems-Study Group 14; 30 pp

ITU-T X.25

Interface between Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE) for Terminals Operating in the Packet Mode and Connected to Public Data Networks by Dedicated Circuit - Series X: Data Networks and Open System Communication Public Data Networks - Interfaces-Study Group 7; 169 pp

ITU-T Y.1341

Characteristics of Ethernet transport network equipment functional blocks SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT GENERATION NETWORKS Internet protocol aspects – Transport-Study Group 15; Also Listed as G.8021

ITU-T G.664

(Pre-Published) Optical safety procedures and requirements for optical transport systems

ITU-T G.693

Optical interfaces for intra-office systems

ITU-T G.695

Optical interfaces for coarse wavelength division multiplexing applications-Study Group 15; Covering Note: 06/14/05

ITU-T G.7714.1

Protocol for automatic discovery in SDH and OTN networks SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Internet protocol aspects – Operation, administration and maintenance-Also Listed as Y.1705.1

ITU-T G.7715

Architecture and requirements for routing in the automatically switched optical networks Series G: Transmission Systems and Media, Digital Systems and Networks Digital terminal equipments - Operations, administration and maintenance features of transmission equipment-Study Group 15; Y.1706

ITU-T G.781 CORR 1

Digital terminal equipments – Principal characteristics of multiplexing equipment for the synchronous digital hierarchy SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Synchronization layer functions Corrigendum 1-Study Group 15

ITU-T G.8011.1

Ethernet private line service SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – General aspects-Study Group 15; Also Listed as Y.1307.1

ITU-T G.8121 CORR 1

Characteristics of Transport MPLS equipment functional blocks Corrigendum 1

ITU-T G.871

Framework for Optical Transport Network Recommendations Series G: Transmission Systems and Media, Digital Systems and Networks Digital Networks - Optical Transport Networks-Study Group 15

ITU-T G.871 IMP

Implementers’ Guide for ITU-T Rec. G.871/Y.1301 (10/2000) Framework for optical transport network Recommendations-Study Group 15

ITU-T G.992.1 AMD 1

Asymmetric digital subscriber line (ADSL) transceivers Amendment 1: Revised Annex C, new Annex I and new Appendix V SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system – Access networks-Study Group 15

ITU-T H.323 ANNEX R

Packet-Based Multimedia Communications Systems Annex R: Robustness Methods for H.323 Entities Series H: Audiovisual and Multimedia Systems Infrastructure of Audiovisual Services - Systems and Terminal Equipment for Audiovisual Services-Study Group 16

ITU-T I.431

(SUPERSEDED) Primary Rate User-Network Interface - Layer 1 Specification - Integrated Services Digital Network (ISDN) - ISDN User-Network Interfaces-Study Group 18; 42 pp

ITU-T M.3050.0

Enhanced Telecom Operations Map (eTOM) – Introduction SERIES M: TMN AND NETWORK MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS, TELEPHONE CIRCUITS, TELEGRAPHY, FACSIMILE AND LEASED CIRCUITS Telecommunications management network-Study Group 4

ITU-T P.56

Objective Measurement of Active Speech Level - Telephone Transmission Quality Objective Measuring Apparatus (Study Group XII) 15 pp

ITU-T P.57

(Pre-Published) Artificial ears

ITU-T P.58

Head and Torso Simulator for Telephonometry - Series P: Telephone Transmission Quality; Objective Measuring Apparatus-Study Group 12; 39 pp

ITU-T P.862.3

(Pre-Published) Application guide for objective quality measurement based on Recommendations P.862, P.862.1 and P. 862.2

ITU-T Q.1901 CORR 1

Bearer Independent Call Control Protocol Corrigendum 1 Series Q: SWITCHING AND SIGNALLING Specifications of signalling related to Bearer Independent Call Control (BICC)-Study Group 11

ITU-T Q.421

Line Signalling, Digital Version - Digital Line Signalling Code - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp

ITU-T Q.730

ISDN User part Supplementary Services - Series Q: Switching and Signalling - Specifications of Signalling System No. 7 - ISDN Supplementary Services-Study Group 11; 47 pp

ITU-T Q.765

Signalling System No. 7 - Application Transport Mechanism - Series Q: Switching and Signalling Specifications of Signalling System No. 7 - ISDN User Part-Study Group 11

ITU-T Q.920

Digital Subscriber Signalling System No.1 (DSS1) - ISDN User-Network Interface Data Link Layer - General Aspects - Digital Subscriber Signalling System No. 1 (DSS1) (Study Group XI) 23 pp (ETSI PRETS 300 402-1)

ITU-T Q.922

ISDN Data Link Layer Specification for Frame Mode Bearer Services (Study Group XI) 112 pp

ITU-T Q.953.3

Stage 3 Description for Call Completion Supplementary Services Using DSS 1: Completion of Calls to Busy Subscribers (CCBS) - Series Q: Switching and Signalling Digital Subscriber Signalling System No. 1 - Stage 3 Description for Supplementary Services Using DSS 1-Study Group 11; 107 pp

ITU-T Q.956 CLAUSE 2

Integrated Services Digital Network (ISDN) - Stage 3 Service Description for Charging Supplementary Services Using DSS 1 Clause 2 - Advice of Charge (AOC) - Digital Subscriber Signalling System No. 1 (Study Group 11) 51 pp

ITU-T T.50

International Reference Alphabet (IRA) (Formerly International Alphabet No. 5 or IA5) Information Technology - 7-Bit Coded Character Set for Information Interchange (Study Group VIII) 22 pp

ITU-T V.32 BIS

Duplex Modem Operating at Data Signalling Rates of up to 14 400 bit/s for Use on the General Switched Telephone Network and on Leased Point-to-Point 2-Wire Telephone-Type Circuits (Study Group XVII) 25 pp

ITU-T Y.1331

Interfaces for the Optical Transport Network (OTN) Series Y: Global Information Infrastructure and Internet Protocol Aspects Internet Protocol Aspects - Transport-Also listed as G.709; Study Group 15

ITU-T E.860

Framework of a service level agreement SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS Quality of telecommunication services: concepts, models, objectives and dependability planning – Use of quality of service objectives for planning of telecommunication networks-Study Group 2

ITU-T G.108

Application of the E-Model: A Planning Guide Amendment 1: New Appendix I: The relationship between and interaction of talker echo and absolute delay Series G: Transmission Systems and Media, Digital Systems and Networks International Telephone Connections and Circuits - General Definitions-Study Group 12

ITU-T G.111

Loudness Ratings (LRs) in an International Connection-Transmission Systems and Media General Recmns on the Transmission Quality for an Entire International Telephone Connection (Study Group XII) 21 pp

ITU-T G.663 AMD 1

Amendment 1: Amendments to Appendix II Application Related Aspects of Optical Amplifier Devices and Sub-Systems Series G: Transmission Systems and Media, Digital Systems and Networks Transmission Media Characteristics - Characteristics of Optical Components and Subsystems-Study Group 15

ITU-T G.702

Digital Hierarchy Bit Rates - General Aspects of Digital Transmission Systems; Terminal Equipments (Study Groups XV and XVIII) 4 pp-Study Groups XV and XVIII; 6pp

ITU-T G.706

Frame Alignment and Cyclic Redundancy Check (CRC) Procedures Relating to Basic Frame Structures Defined in Recommendation G.704 (Study Group XVIII) 19 pp

ITU-T G.7710

Common equipment management function requirements - SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS - Digital terminal equipments - Operations, administration and maintenance features of transmission equipment-Study Group 15; Y.1701

ITU-T G.808.1

Generic protection switching – Linear trail and subnetwork protection-Study Group 15

ITU-T G.821

Error performance of an international digital connection operating at a bit rate below the primary rate and forming part of an Integrated Services Digital Network SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – Quality and availability targets-Study Group 13

ITU-T G.992.2

Splitterless Asymmetric Digital Subscriber Line (ADSL) Transceivers - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Digital Sections and Digital Line System - Access Networks-Study Group 15; 178 pp

ITU-T H.235.7 NOTE

H.323 security: Usage of the MIKEY key management protocol for the Secure Real Time Transport Protocol (SRTP) within H.235

ITU-T H.248.9

Gateway control protocol: Advanced media server packages

ITU-T J.144

(Pre-Published) Objective perceptual video quality measurement techniques for digital cable television in the presence of a full reference SERIES J: CABLE NETWORKS AND TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA SIGNALS Measurement of the quality of service-Study Group 9

ITU-T K.11

Principles of Protection Against Overvoltages and Overcurrents - Protection Against Interference (Study Group V) 14 pp

ITU-T K.48

EMC Requirements for each telecommunication equipment - Product family Recommendation-Study Group 5

ITU-T M.3050.2

Enhanced Telecom Operations Map (eTOM) – Process decompositions and descriptions SERIES M: TMN AND NETWORK MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS, TELEPHONE CIRCUITS, TELEGRAPHY, FACSIMILE AND LEASED CIRCUITS Telecommunications management network-Study Group 4

ITU-T M.3050.3

Enhanced Telecom Operations Map (eTOM) – Representative process flows SERIES M: TMN AND NETWORK MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS, TELEPHONE CIRCUITS, TELEGRAPHY, FACSIMILE AND LEASED CIRCUITS Telecommunications management network-Study Group 4

ITU-T P.502

Objective Test Methods for Speech Communication Systems Using Complex Test Signals Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks Objective Measuring Apparatus-Study Group 12

ITU-T P.64

Determination of Sensitivity/Frequency Characteristics of Local Telephone Systems - Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks - Objective Electro-Acoustical Measurements-Study Group 12; Covering Note Erratum May 2, 2000

ITU-T Q.931 AMD 1

ISDN user-network interface layer 3 specification for basic call control SERIES Q: SWITCHING AND SIGNALLING Digital subscriber Signalling System No. 1 – Network layer-Study Group 11

ITU-T Q.956

Integrated Services Digital Network (ISDN) - Stage 3 Description for Charging Supplementary Services Using DSS 1 - Clause 3 - Reverse Charging - Digital Subscriber Signalling System No. 1 (Study Group 11) 39 pp

ITU-T V.11

Electrical Characteristics for Balanced Double-Current Interchange Circuits Operating at Data Signalling Rates up to 10 Mbit/s - Series V: Data Communication over the Telephone Network Interfaces and Voiceband Modems-Study Group 14; 19 pp

ITU-T X.208

Specification of Abstract Syntax Notation One (ASN.1) - Data Communication Networks - Open Systems Interconnection (OSI) Model and Notation, Service Definition (Study Group VII) 74 pp

ITU-T G.121

Loudness Ratings (LRs) of National Systems - Transmission Systems and Media General Characteristics of National Systems Forming Part of International Connections-Study Group 12

ITU-T G.691 AMD 1

Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers Amendment 1: SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Transmission media characteristics – Characteristics of optical components and subsystems-Study Group 15

ITU-T G.701

Vocabulary of Digital Transmission and Multiplexing, and Pulse Code Modulation (PCM) Terms - General Aspects of Digital Transmissions Systems (Study Group XV) 40 pp

ITU-T G.803 AMD 1

Architecture of transport networks based on the synchronous digital hierarchy (SDH) Amendment 1-Study Group 15

ITU-T G.842

Interworking of SDH Network Protection Architectures - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Digital Networks - SDH Network Characteristics

ITU-T G.993.2

Very high speed digital subscriber line transceivers 2 (VDSL2)-Study Group 15

ITU-T H.248.37

Gateway control protocol: IP NAPT traversal package SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services – Communication procedures-Study Group 16

ITU-T H.248.8

Gateway control protocol: Error code and service change reason description-Study Group 16

ITU-T H.323 AMD 2

Packet-based multimedia communications systems Amendment 2: New Annex M4 – Tunnelling of narrowband signalling syntax (NSS) for H.323

ITU-T H.323 ANNEX P

Packet-based multimedia communications systems SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services – Systems and terminal equipment for audiovisual services Annex P: Transfer of modem signals over H.323-Study Group 16

ITU-T H.450.5

Call Park and Call Pickup Supplementary Services for H.323 - Series H: Audiovisual and Multimedia Systems - Supplementary Services for Multimedia-Study Group 16; Covering Note: May 25, 2000; Covering Note: April 22, 2002

ITU-T I.241. 1

Telephony - Integrated Services Digital Network (ISDN) - General Structure and Service Capabilities (Study Group XVIII) 4 pp

ITU-T K.43

Immunity requirements for telecommunication equipment SERIES K: PROTECTION AGAINST INTERFERENCE-Study Group 5

ITU-T M.3020

TMN Interface Specification Methodology Series M: TMN and Network Maintenance: International Transmission Systems, Telephone Circuits, Telegraphy, Facsimile and Leased Circuits Telecommunications Management Network-Study Group 4

ITU-T P.911

Subjective Audiovisual Quality Assessment Methods for Multimedia Applications - Series P: Telephone Transmission Quality, Telephone Installations, Local Line Networks Audiovisual Quality in Multimedia Services-Study Group 12; 27 pp

ITU-T Q.1111

Interfaces between the INMARSAT Standard B System and the International Public Switched Telephone Network/ISDN - Interworking with Satellite Mobile Systems (Study Group XI) 25 pp