ITU-T G Series Recommendations: New Documents

[ G.160 (2008) Amendment 1 (11/09) ] - Revised Appendix II on objective measures for the characterization of the basic functioning of noise reduction algorithms

Tue, 16 Mar 2010 10:15:46 GMT

Summary

Appendix II of Recommendation ITU-T G.160 presents an objective methodology for characterizing the basic effect of noise reduction (NR) methods. Three objective measures are specified for characterizing NR solutions. Recommendation target value ranges in specified conditions are given for the measures to serve as basic guidelines for proper functioning of NR methods. Amendment 1 of Recommendation ITU-T G.160 brings corrections and clarifications to the text of Appendix II.

[ G.160 (2008) Amendment 1 (11/09) ] - Revised Appendix II on objective measures for the characterization of the basic functioning of noise reduction algorithms

Tue, 16 Mar 2010 10:15:46 GMT

Summary

[ G.160 (2008) Amendment 1 (11/09) ] - Revised Appendix II on objective measures for the characterization of the basic functioning of noise reduction algorithms

Tue, 16 Mar 2010 10:15:46 GMT

Summary

[ G.1070 (2007) Amendment 1 (11/09) ] - Revised Appendix I - Coefficients in video quality estimation function with respect to coding and packet-loss degradations

Tue, 16 Mar 2010 10:12:30 GMT

Summary

Amendment 1 to Recommendation ITU-T G.1070 revises Appendix I by adding provisional coefficients for video quality estimation associated with VGA video codecs.

[ G.1070 (2007) Amendment 1 (11/09) ] - Revised Appendix I - Coefficients in video quality estimation function with respect to coding and packet-loss degradations

Tue, 16 Mar 2010 10:12:30 GMT

Summary

Amendment 1 to Recommendation ITU-T G.1070 revises Appendix I by adding provisional coefficients for video quality estimation associated with VGA video codecs.

[ G.984.1 (2008) Amendment 1 (10/09) ]

Tue, 09 Mar 2010 08:27:30 GMT

[ G.984.1 (2008) Amendment 1 (10/09) ]

Tue, 09 Mar 2010 08:27:30 GMT

[ G.984.1 (2008) Amendment 1 (10/09) ]

Tue, 09 Mar 2010 08:27:29 GMT

[ G.707/Y.1322 (2007) Amendment 2 (11/09) ]

Tue, 09 Mar 2010 08:01:02 GMT

Summary

Amendment 2 to Recommendation ITU-T G.707/Y.1322 contains additional material to be incorporated in the Recommendation and adds the necessary functionality for adaptation of STM‑256 over multichannel parallel interfaces.

[ G.707/Y.1322 (2007) Amendment 2 (11/09) ]

Tue, 09 Mar 2010 08:01:02 GMT

Summary

[ G.707/Y.1322 (2007) Amendment 2 (11/09) ]

Tue, 09 Mar 2010 08:01:02 GMT

Summary

[ G.984.4 (2008) Amendment 1 (06/09) ]

Fri, 05 Mar 2010 10:21:48 GMT

Summary

Amendment 1 to Recommendation ITU‑T G.984.4 contains various updates to ITU-T G.984.4 (2008). A number of editorial corrections and clarifications are included, along with the following substantive changes and extensions to G-PON OMCI.

.�� OMCI for reach extenders

.�� PM extensions for Ethernet bridge ports and circuit emulation services (pseudowires)

.�� Update of OMCI to align with Recommendation ITU-T G.997.1 (2009)

.�� Revision of the VLAN tagging filter data managed entity

.�� A managed entity to control out-of-band file transfer through OMCI

.�� Extended descriptions and OMCI extensions on traffic management and quality of service

.�� A number of additional minor extensions to OMCI

[ G.984.4 (2008) Amendment 1 (06/09) ]

Fri, 05 Mar 2010 10:21:48 GMT

Summary

.�� OMCI for reach extenders

.�� PM extensions for Ethernet bridge ports and circuit emulation services (pseudowires)

.�� Update of OMCI to align with Recommendation ITU-T G.997.1 (2009)

.�� Revision of the VLAN tagging filter data managed entity

.�� A managed entity to control out-of-band file transfer through OMCI

.�� Extended descriptions and OMCI extensions on traffic management and quality of service

.�� A number of additional minor extensions to OMCI

[ G.8031/Y.1342 (11/09) ] - Ethernet linear protection switching

Fri, 05 Mar 2010 10:17:38 GMT

Summary

This Recommendation describes the specifics of linear protection switching for Ethernet VLAN signals. Included are details pertaining to ETH linear protection characteristics, architectures and the APS protocol. The protection scheme considered in this Recommendation is:

- VLAN‑based Ethernet subnetwork connection linear protection with sublayer monitoring.

[ G.8031/Y.1342 (11/09) ] - Ethernet linear protection switching

Fri, 05 Mar 2010 10:17:38 GMT

Summary

- VLAN‑based Ethernet subnetwork connection linear protection with sublayer monitoring.

[ G.8031/Y.1342 (11/09) ] - Ethernet linear protection switching

Fri, 05 Mar 2010 10:17:38 GMT

Summary

- VLAN‑based Ethernet subnetwork connection linear protection with sublayer monitoring.

[ G.652 (11/09) ] - Characteristics of a single-mode optical fibre and cable

Fri, 05 Mar 2010 10:16:03 GMT

Summary

This Recommendation describes the geometrical, mechanical, and transmission attributes of a single‑mode optical fibre and cable which has zero-dispersion wavelength around 1310 nm. This fibre was originally optimized for use in the 1310 nm wavelength region, but can also be used in the 1550 nm region. This is the latest revision of a Recommendation that was first created in 1984. This revision clarifies that PMD_Q must be specified on uncabled fibre and makes certain tolerances tighter. This revision is intended to maintain the continuing commercial success of this fibre in the evolving world of high-performance optical transmission systems.

[ G.652 (11/09) ] - Characteristics of a single-mode optical fibre and cable

Fri, 05 Mar 2010 10:16:03 GMT

Summary

[ G.652 (11/09) ] - Characteristics of a single-mode optical fibre and cable

Fri, 05 Mar 2010 10:16:03 GMT

Summary

[ G.711 (1988) Amendment 1 (08/09) ] - New Annex A on lossless encoding of PCM frames

Tue, 02 Mar 2010 14:51:00 GMT

Summary

Amendment 1 to Recommendation ITU-T G.711 (1998) introduces Annex A, which recommends the use of Recommendation ITU-T G.711.0 (2009) for applications requiring the lossless encoding of frames consisting of 40, 80, 160, 240 and 320 A-/�-law log-PCM samples conforming to Recommendation ITU‑T G.711.

[ G.711 (1988) Amendment 1 (08/09) ] - New Annex A on lossless encoding of PCM frames

Tue, 02 Mar 2010 14:51:00 GMT

Summary

[ G.711 (1988) Amendment 1 (08/09) ] - New Annex A on lossless encoding of PCM frames

Tue, 02 Mar 2010 14:50:59 GMT

Summary

[ G.Sup46 (05/09) ] - G-PON PHY/TC Interoperability Test Plan

Tue, 02 Mar 2010 14:45:08 GMT

Summary

Supplement 46 to ITU-T G-series Recommendations defines a test plan whose purpose is to verify interoperability between a G-PON OLT and ONU. Emphasis is placed on test cases that address the G-PON physical layer (ITU‑T G.984.2), the TC layer (ITU-T G.984.3) and low-level components of the management layer (ITU-T G.984.4).

Service layer test cases are out of scope for this supplement.

Interoperability testing is conducted by or on behalf of four interests: the OLT vendor, the ONU vendor, one or more network operators who are potential customers, and possibly a third-party testing lab.

For each test case, the supplement provides detailed information on:

.�� purpose;

.�� reference standard;

.�� preconditions and dependencies;

.�� test set-up;

.�� test equipment;

.�� test procedure;

.�� pass - fail criteria.

[ G.Sup46 (05/09) ] - G-PON PHY/TC Interoperability Test Plan

Tue, 02 Mar 2010 14:45:07 GMT

Summary

Service layer test cases are out of scope for this supplement.

For each test case, the supplement provides detailed information on:

.�� purpose;

.�� reference standard;

.�� preconditions and dependencies;

.�� test set-up;

.�� test equipment;

.�� test procedure;

.�� pass - fail criteria.

[ G.Sup46 (05/09) ] - G-PON PHY/TC Interoperability Test Plan

Tue, 02 Mar 2010 14:45:07 GMT

Summary

Service layer test cases are out of scope for this supplement.

For each test case, the supplement provides detailed information on:

.�� purpose;

.�� reference standard;

.�� preconditions and dependencies;

.�� test set-up;

.�� test equipment;

.�� test procedure;

.�� pass - fail criteria.

[ G.9960 (10/09) ] - Next generation home networking transceivers

Tue, 02 Mar 2010 10:21:22 GMT

Summary

This Foundation Recommendation specifies basic characteristics of unified high-speed home networking transceivers capable of operating over premises wiring including inside telephone wiring, coaxial cable, and power-line wiring, and combinations of these, with modulation parameters for data rates up to 1 gigabit/second. The specification includes a description of the home network architecture and reference models along with major aspects of the transceiver physical layer specification. A future version of this Recommendation will include the data link layer and regional Annexes to complete the transceiver specification.

[ G.9960 (10/09) ] - Next generation home networking transceivers

Tue, 02 Mar 2010 10:21:22 GMT

Summary

[ G.9960 (10/09) ] - Next generation home networking transceivers

Tue, 02 Mar 2010 10:21:21 GMT

Summary

[ G.720.1 (01/10) ] - Generic sound activity detector

Thu, 25 Feb 2010 14:37:29 GMT

Due to the large size of the test vectors for G.720.1 (2010/01), they are not available with this ZIP package, but rather available for free download from the ITU-T Test Signals Database at: http://www.itu.int/net/ITU-T/sigdb/speaudio/Gseries.htm#G.720.1

Summary

This Recommendation describes an independent front-end processing module implementing a generic sound activity detector (GSAD) that can be applied prior to signal processing applications and can operate on narrowband or wideband audio input using 10 ms frame length (without lookahead), such as used by speech or audio codecs. The primary function of the GSAD is to indicate the input frame activity for performing voice activity detection (VAD). For an active frame, it further indicates if the input frame is speech or music (speech/music discrimination), and for an inactive frame it indicates whether the frame is a silence frame or an audible noise frame (silence detection). The GSAD can also operate when only the primary function of indicating the input frame activity is used.

An external control signal indicates to the GSAD algorithm which one of three different operating points to use, namely: bandwidth-saving, balanced and quality-preferred operating points. For the activity detection functionality, these operating points provide selectable balancing between bandwidth saving and audio quality, which can be utilized for high-performance silence compression schemes that can balance between the end-users speech and audio subjective quality needs and the system and network traffic requirements.

The three different operating points also control the GSAD emphasis and balance between speech and music classification for the active frames, which can be utilized for fine-tuning of source-controlled audio compression systems.

The VAD module uses a dual-parameters classification scheme, where one parameter is a differential zero crossing rate measure and the other parameter is a modified segmental SNR measure. An initial VAD decision is made with a pair of inequalities, with factors that are adaptive to the long term SNR of the input signal. A final VAD decision is obtained by an adaptive hangover scheme. The Speech/Music Discrimination module calculates the variance of a spectral deviation measure and applies an adaptive threshold to make an initial decision between speech and music. Two spectral peakiness measures further modify that initial decision and a one-frame hangover is used to obtain the final speech/music discrimination decision. The Silence Detection module uses an energy threshold to discriminate between a silence frame and an audible noise frame.

This Recommendation provides a detailed description of the overall GSAD configuration, including the operating points; the VAD module; the speech/music discrimination module and the silence detection module. The Recommendation also contains an electronic attachment with the ANSI C source code which forms an integral part of this Recommendation, and a set of test vectors. The set of test vectors is also available for download from the ITU-T Test Signal Database at: http://itu.int/net/ITU-T/sigdb/speaudio/Gseries.htm#G.720.1.

[ G.973.1 (11/09) ] - Longitudinally compatible DWDM applications for repeaterless optical fibre submarine cable systems

Wed, 24 Feb 2010 10:34:30 GMT

Summary

This Recommendation provides physical layer specifications for DWDM applications for repeaterless optical fibre submarine cable systems. Longitudinally compatible applications for DWDM applications for repeaterless optical fibre submarine cable systems are described for point-to-point, multi-channel line systems without remotely pumped optical amplifiers. The primary purpose is to enable multiple vendors to design DWDM transmission equipment for submarine fibre links that are compliant with this standard.

[ G.973.1 (11/09) ] - Longitudinally compatible DWDM applications for repeaterless optical fibre submarine cable systems

Wed, 24 Feb 2010 10:34:30 GMT

Summary

[ G.973.1 (11/09) ] - Longitudinally compatible DWDM applications for repeaterless optical fibre submarine cable systems

Wed, 24 Feb 2010 10:34:30 GMT

Summary

[ G.8051/Y.1345 (11/09) ] - Management aspects of the Ethernet-over-Transport (EoT) capable network element

Wed, 24 Feb 2010 10:05:07 GMT

Summary

ITU-T Recommendation G.8051/Y.1345 addresses management aspects of the Ethernet Transport�� network element containing transport functions of one or more of the layer networks of the Ethernet transport network. The management of the Ethernet layer networks is separable from that of its client layer networks so that the same means of management can be used regardless of the client. The management functions for fault management, configuration management, performance monitoring, and security management are specified.

The 2009 Revision of this Recommendation has added the management of additional transport functions that have been introduced in the 2009 Revision of G.8021/Y.1341

[ G.8051/Y.1345 (11/09) ] - Management aspects of the Ethernet-over-Transport (EoT) capable network element

Wed, 24 Feb 2010 10:05:07 GMT

Summary

The 2009 Revision of this Recommendation has added the management of additional transport functions that have been introduced in the 2009 Revision of G.8021/Y.1341

[ G.8051/Y.1345 (11/09) ] - Management aspects of the Ethernet-over-Transport (EoT) capable network element

Wed, 24 Feb 2010 10:05:06 GMT

Summary

The 2009 Revision of this Recommendation has added the management of additional transport functions that have been introduced in the 2009 Revision of G.8021/Y.1341

[ G.8264/Y.1364 (2008) Corrigendum 1 (11/09) ]

Tue, 23 Feb 2010 13:41:05 GMT

Summary

This corrigendum contains editorial and technical corrections to ITU-T Rec. G.8264/Y.1364(10/2008):

.�� Clarification of QL-Failed condition and usage in QL-Disabled mode;

.�� Clarification of �ESMC PDU format

[ G.8264/Y.1364 (2008) Corrigendum 1 (11/09) ]

Tue, 23 Feb 2010 13:41:04 GMT

Summary

This corrigendum contains editorial and technical corrections to ITU-T Rec. G.8264/Y.1364(10/2008):

.�� Clarification of QL-Failed condition and usage in QL-Disabled mode;

.�� Clarification of �ESMC PDU format

[ G.8264/Y.1364 (2008) Corrigendum 1 (11/09) ]

Tue, 23 Feb 2010 13:41:02 GMT

Summary

This corrigendum contains editorial and technical corrections to ITU-T Rec. G.8264/Y.1364(10/2008):

.�� Clarification of QL-Failed condition and usage in QL-Disabled mode;

.�� Clarification of �ESMC PDU format

[ G.984.6 (2008) Amendment 1 (11/09) ] - Wavelength-converting, continuous mode, and 1:N-protected range extenders

Tue, 23 Feb 2010 10:32:45 GMT

Wavelength-converting, continuous mode, and 1:N-protected range extenders

[ G.984.6 (2008) Amendment 1 (11/09) ] - Wavelength-converting, continuous mode, and 1:N-protected range extenders

Tue, 23 Feb 2010 10:32:44 GMT

Wavelength-converting, continuous mode, and 1:N-protected range extenders

[ G.984.6 (2008) Amendment 1 (11/09) ] - Wavelength-converting, continuous mode, and 1:N-protected range extenders

Tue, 23 Feb 2010 10:32:44 GMT

Wavelength-converting, continuous mode, and 1:N-protected range extenders

[ G.7713/Y.1704 (11/09) ] - Distributed call and connection management (DCM)

Tue, 23 Feb 2010 10:31:05 GMT

Summary

This Recommendation provides the requirements for the distributed call and connection management for both the User Network Interface (UNI) and the Network Node Interface (NNI). The requirements in this Recommendation specify the communications across interfaces to effect automated call operations and connection operations. Items covered in this Recommendation include:

-�� attribute specifications;

-�� message specifications;

-�� signal flows;

-�� management of DCM.

This Recommendation does not cover any aspects related to routing or automatic discovery.

Revisions to this Recommendation include the following changes:

-�� Addition of interlayer signalling requirements following the G.8080 interlayer architecture.

[ G.7713/Y.1704 (11/09) ] - Distributed call and connection management (DCM)

Tue, 23 Feb 2010 10:31:05 GMT

Summary

-�� attribute specifications;

-�� message specifications;

-�� signal flows;

-�� management of DCM.

This Recommendation does not cover any aspects related to routing or automatic discovery.

Revisions to this Recommendation include the following changes:

-�� Addition of interlayer signalling requirements following the G.8080 interlayer architecture.

[ G.7713/Y.1704 (11/09) ] - Distributed call and connection management (DCM)

Tue, 23 Feb 2010 10:31:05 GMT

Summary

-�� attribute specifications;

-�� message specifications;

-�� signal flows;

-�� management of DCM.

This Recommendation does not cover any aspects related to routing or automatic discovery.

Revisions to this Recommendation include the following changes:

-�� Addition of interlayer signalling requirements following the G.8080 interlayer architecture.

[ G.7710/Y.1701 (2007) Corrigendum 1 (11/09) ]

Thu, 18 Feb 2010 16:18:15 GMT

Summary

This corrigendum identifies corrections to be made in ITU-T Rec. G.7710/Y.1701, common equipment management function requirements.

[ G.7710/Y.1701 (2007) Corrigendum 1 (11/09) ]

Thu, 18 Feb 2010 16:18:14 GMT

Summary

This corrigendum identifies corrections to be made in ITU-T Rec. G.7710/Y.1701, common equipment management function requirements.

[ G.7710/Y.1701 (2007) Corrigendum 1 (11/09) ]

Thu, 18 Feb 2010 16:18:13 GMT

Summary

This corrigendum identifies corrections to be made in ITU-T Rec. G.7710/Y.1701, common equipment management function requirements.

[ G.997.1 (2009) Corrigendum 1 (11/09) ]

Thu, 18 Feb 2010 16:17:02 GMT

Summary

This Corrigendum 1 of G.997.1 contains a correction to the definition of LATN and SATN to line them up with the relevant xDSL recommendation.

[ G.997.1 (2009) Corrigendum 1 (11/09) ]

Thu, 18 Feb 2010 16:17:00 GMT

Summary

This Corrigendum 1 of G.997.1 contains a correction to the definition of LATN and SATN to line them up with the relevant xDSL recommendation.

[ G.997.1 (2009) Corrigendum 1 (11/09) ]

Thu, 18 Feb 2010 16:16:59 GMT

Summary

This Corrigendum 1 of G.997.1 contains a correction to the definition of LATN and SATN to line them up with the relevant xDSL recommendation.