ITU-T G Series Recommendations: New Documents

[ G.8251 (2010) Amendment 1 (04/11) ]

ven, 02 f�v 2012 10:11:04 GMT

Summary

Amendment 1 to Recommendation ITU-T G.8251 (2010) provides the values for high-band jitter of the OTU3 and OTU4 multilane interfaces.

[ G.8251 (2010) Amendment 1 (04/11) ]

ven, 02 f�v 2012 10:11:04 GMT

Summary

Amendment 1 to Recommendation ITU-T G.8251 (2010) provides the values for high-band jitter of the OTU3 and OTU4 multilane interfaces.

[ G.8201 (04/11) ] - Error performance parameters and objectives for multi-operator international paths within optical transport networks

ven, 02 f�v 2012 10:04:20 GMT

Recommendation ITU-T G.8201 defines error performance parameters and objectives for international ODUk paths transported by the optical transport network (OTN), as described in Recommendation ITU‑T G.709/Y.1331. While this Recommendation specifically addresses objectives for international ODUk paths, the allocation principles can be applied to the design of error performance for national or private ODUk paths. This Recommendation is based upon a block‑based measurement concept using error detection code (EDC) and EDC usage inherent to the path under test; the block repetition rate being in accordance with OTN technology in accordance with Recommendation ITU-T G.709/Y.1331. This simplifies in‑service measurements. The events, parameters and objectives are defined accordingly. In addition to path performance assessment, tandem connection monitoring is covered.

[ G.8201 (04/11) ] - Error performance parameters and objectives for multi-operator international paths within optical transport networks

ven, 02 f�v 2012 10:04:20 GMT

Summary

[ G.9964 (12/11) ] - Unified high-speed wire-line based home networking transceivers - Specification of spectrum related components

ven, 02 f�v 2012 09:55:39 GMT

Summary

Recommendation ITU-T G.9964 specifies the control parameters that determine spectral content, power spectral density (PSD) mask requirements, a set of tools to support reduction of the transmit PSD, means to measure this PSD for transmission over telephone wiring, power line wiring and coaxial cable, as well as the allowable total transmit power into a specified termination impedance. It complements the system architecture and physical layer (PHY) specification in Recommendation ITU-T G.9960, and the data link layer (DLL) specification in Recommendation ITU-T G.9961 as well as the modifications and additions to these Recommendations specifying the MIMO home networking transceiver in Recommendation ITU-T G.9963.

[ G.9964 (12/11) ] - Unified high-speed wire-line based home networking transceivers - Specification of spectrum related components

ven, 02 f�v 2012 09:55:39 GMT

Summary

[ G.Sup43 (02/11) ] - Transport of IEEE 10GBASE-R in optical transport networks (OTN)

ven, 26 jan 2012 13:34:47 GMT

Summary

Supplement 43 to ITU-T G-series Recommendations describes several approaches for transport of 10G LAN PHY, and one for 10G WAN PHY, over SDH and OTN transport networks. As some of these approaches use rates, formats and mappings that are not defined in ITU-T Recommendations, this supplement analyses various attributes of the different approaches to provide guidance regarding their applicability to different network contexts.

This supplement relates to Recommendations ITU-T G.872, ITU-T G.709/Y.1331, ITU‑T G.798, ITU-T G.707/Y.1322, ITU-T G.8010/Y.1306, ITU-T G.8012/Y.1308, ITU-T G.959.1 and ITU‑T G.696.1.

[ G.Sup43 (02/11) ] - Transport of IEEE 10GBASE-R in optical transport networks (OTN)

ven, 26 jan 2012 13:34:46 GMT

Summary

This supplement relates to Recommendations ITU-T G.872, ITU-T G.709/Y.1331, ITU‑T G.798, ITU-T G.707/Y.1322, ITU-T G.8010/Y.1306, ITU-T G.8012/Y.1308, ITU-T G.959.1 and ITU‑T G.696.1.

[ G.977 (04/11) ] - Characteristics of optically amplified optical fibre submarine cable systems

ven, 26 jan 2012 13:23:37 GMT

Summary

Recommendation ITU‑T G.977 is concerned with the system performance and interface requirements of repeatered optical submarine systems using optical line amplifiers (OFAs) as a line repeaters. It covers the aspects related to single wavelength systems (SWS), wavelength division multiplexing systems (WDMS) and dense wavelength division multiplexing systems (DWDMS). The physical implementation of optically amplified fibre submarine systems is considered in Annex A.

[ G.977 (04/11) ] - Characteristics of optically amplified optical fibre submarine cable systems

ven, 26 jan 2012 13:23:36 GMT

Summary

[ G.Imp7714 (12/2011) ] - Implementers' Guide for terms and definitions found in Amendment 1 to Recommendation ITU-T G.7714 (2005)

sam, 20 jan 2012 15:28:50 GMT

Implementers' Guide for terms and definitions found in Amendment 1 to Recommendation ITU-T G.7714 (2005)

[ G.Imp7714 (12/2011) ] - Implementers' Guide for terms and definitions found in Amendment 1 to Recommendation ITU-T G.7714 (2005)

sam, 20 jan 2012 15:28:50 GMT

Implementers' Guide for terms and definitions found in Amendment 1 to Recommendation ITU-T G.7714 (2005)

[ G.997.1 (2009) Amendment 4 (12/11) ]

sam, 20 jan 2012 15:28:26 GMT

Summary

Amendment 4 to Recommendation ITU-T G.997.1 (2009) contains the following additions:

-�� Change to the reporting of downstream crosstalk channel XLINds.

-�� Addition of the reporting of the upstream crosstalk channel XLINus.

-�� Management of SRA and SOS with retransmission.

-�� Addition of line parameter for maximum delay octet split between downstream and upstream direction.

-�� Addition of new HPE bandplans.

[ G.997.1 (2009) Amendment 4 (12/11) ]

sam, 20 jan 2012 15:28:26 GMT

Summary

Amendment 4 to Recommendation ITU-T G.997.1 (2009) contains the following additions:

-�� Change to the reporting of downstream crosstalk channel XLINds.

-�� Addition of the reporting of the upstream crosstalk channel XLINus.

-�� Management of SRA and SOS with retransmission.

-�� Addition of line parameter for maximum delay octet split between downstream and upstream direction.

-�� Addition of new HPE bandplans.

[ G.9963 (12/11) ] - Unified high-speed wire-line based home networking transceivers - Multiple Input/Multiple Output (MIMO)

sam, 20 jan 2012 15:26:59 GMT

Summary

Recommendation ITU-T G.9963 specifies the basic characteristics of a multiple-input multiple-output (MIMO) high-speed home networking transceiver capable of operating over premises powerline wiring. This Recommendation includes the required additions and modifications to Recommendations ITU-T G.9960 and ITU-T G.9961, needed in order to fully define a MIMO home networking transceiver. MIMO transceivers are able to transmit over three powerline conductors (phase, neutral, and ground) in more than one Tx port and receive in more than one Rx port, thus providing an increased data rate and enhancing the connectivity (i.e., service coverage) of the home network. This Recommendation also specifies the means by which both ITU-T G.9960/G.9961 and ITU-T G.9963 transceivers interoperate when operating on the same wires.

[ G.9963 (12/11) ] - Unified high-speed wire-line based home networking transceivers - Multiple Input/Multiple Output (MIMO)

sam, 20 jan 2012 15:26:59 GMT

Summary

[ G.9960 (12/11) ] - Unified high-speed wire-line based home networking transceivers - System architecture and physical layer specification

sam, 20 jan 2012 15:24:57 GMT

Summary

Recommendation ITU-T G.9960 specifies the system architecture and physical (PHY) layer for wireline based home networking transceivers capable of operating over premises wiring including inside telephone wiring, coaxial cable, and power-line wiring. It complements the data link layer (DLL) specification in Recommendation ITU-T G.9961.

Besides the inclusion of minor enhancements and error fixes, this version of the Recommendation removes the control parameters that determine spectral content, power spectral density (PSD) mask requirements, and the set of tools to support reduction of the transmit PSD, all of which have been moved to Recommendation ITU-T G.9964.

[ G.9960 (12/11) ] - Unified high-speed wire-line based home networking transceivers - System architecture and physical layer specification

sam, 20 jan 2012 15:24:57 GMT

Summary

[ G.994.1 (2007) Amendment 8 (12/11) ]

sam, 20 jan 2012 15:21:56 GMT

Summary

Amendment 8 to Recommendation ITU-T G.994.1 (2007) contains the following changes:

-�� Addition of code point to indicate the support of Full ITU-T G.993.5-friendly operation.

[ G.994.1 (2007) Amendment 8 (12/11) ]

sam, 20 jan 2012 15:21:56 GMT

Summary

Amendment 8 to Recommendation ITU-T G.994.1 (2007) contains the following changes:

-�� Addition of code point to indicate the support of Full ITU-T G.993.5-friendly operation.

[ G.993.5 (2010) Amendment 1 (12/11) ]

sam, 20 jan 2012 15:18:00 GMT

Summary

Amendment 1 to Recommendation ITU-T G.993.5 (2010) covers:

Pilot sequence length of multiple of 4 (new functionality).
Frequency Dependent Pilot Sequence in the downstream direction (new functionality).
Definition of upstream FEXT coupling coefficients (Xlinpsus) (new functionality).
Improvement of clarity and consistency of wording (corrigendum).

[ G.993.5 (2010) Amendment 1 (12/11) ]

sam, 20 jan 2012 15:17:59 GMT

Summary

Amendment 1 to Recommendation ITU-T G.993.5 (2010) covers:

Pilot sequence length of multiple of 4 (new functionality).
Frequency Dependent Pilot Sequence in the downstream direction (new functionality).
Definition of upstream FEXT coupling coefficients (Xlinpsus) (new functionality).
Improvement of clarity and consistency of wording (corrigendum).

[ G.993.2 (12/11) ] - Very high speed digital subscriber line transceivers 2 (VDSL2)

sam, 20 jan 2012 15:16:49 GMT

Summary

Summary Recommendation ITU-T G.993.2 specifies an access technology that exploits the existing infrastructure of copper wires that were originally deployed for POTS services. It can be deployed from central offices, from fibre-fed cabinets located near the customer premises, or within buildings. This Recommendation is an enhancement to ITU-T G.993.1 that supports asymmetric and symmetric transmission at a bidirectional net data rate up to 200 Mbit/s on twisted pairs using a bandwidth up to 30 MHz. This version of this Recommendation integrates all of the previous amendments and corrigenda with the 2006 version of Recommendation ITU-T G.993.2.

[ G.993.2 (12/11) ] - Very high speed digital subscriber line transceivers 2 (VDSL2)

sam, 20 jan 2012 15:16:49 GMT

Summary

[ G.9961 (2010) Corrigendum 1 (12/11) ]

sam, 20 jan 2012 14:17:06 GMT

Summary

Corrigendum 1 to Recommendation ITU-T G.9961 (2010) addresses several protocol issues. These include issues related to both PHY layer and DLL multicast, channel estimation, tunnel termination, routing and topology management, management message OPCODEs and security.

[ G.9961 (2010) Corrigendum 1 (12/11) ]

sam, 20 jan 2012 14:17:05 GMT

Summary

[ G.998.4 (2010) Corrigendum 3 (12/11) ]

sam, 20 jan 2012 12:34:30 GMT

Summary

Corrigendum 3 to Recommendation ITU-T G.998.4 (2010) covers the following functionalities:

-�� Correction to support of SRA/SOS OLR procedures (corrigendum to Amendment 1).

-�� Correction to memory requirements (corrigendum).

[ G.998.4 (2010) Corrigendum 3 (12/11) ]

sam, 20 jan 2012 12:34:30 GMT

Summary

Corrigendum 3 to Recommendation ITU-T G.998.4 (2010) covers the following functionalities:

-�� Correction to support of SRA/SOS OLR procedures (corrigendum to Amendment 1).

-�� Correction to memory requirements (corrigendum).

[ G.Sup42 (02/11) ] - Guide on the use of the ITU-T Recommendations related to optical fibres and systems technology

jeu, 21 d�c 2011 07:13:55 GMT

Summary

Supplement 42 to ITU-T G-series Recommendations contains a functional grouping of the ITU-T Recommendations on optical fibres and systems technology (e.g., optical fibres and cables, physical optical interfaces, optical fibre submarine cable systems).

An introduction to each category with more than one Recommendation outlines the subjects which are common to the category.

For each Recommendation, there is a short description of the purpose, content and, in many cases, the evolution of the content in the subsequent versions. There are also cross-references to the other Recommendations dealing with related issues.

The main purpose of this guide is to give to developing countries an improved capability in the application of standards, while the telecommunication industry, particularly manufacturers and operators, could benefit from the greater involvement of developing countries in the making and application of standards.

The guide could also have a wider use among manufacturers and operators who are not directly involved in the preparation of this group of Recommendations and they could find the guide to be a useful tool both for rapidly focusing on the Recommendation(s) of specific interest and for better understanding the meaning and the objectives of each Recommendation.

[ G.Sup42 (02/11) ] - Guide on the use of the ITU-T Recommendations related to optical fibres and systems technology

jeu, 21 d�c 2011 07:13:55 GMT

Summary

An introduction to each category with more than one Recommendation outlines the subjects which are common to the category.

[ G.993.2 (2006) Amendment 7 (06/11) ]

jeu, 21 d�c 2011 07:11:48 GMT

Summary

Amendment 7 to Recommendation ITU-T G.993.2 (2006) includes new Annex M on ''Time of day distribution over VDSL2 links'', specification of an alternative electrical length estimation method, and revision to Annex B ''Region B (Europe)''.

[ G.993.2 (2006) Amendment 7 (06/11) ]

jeu, 21 d�c 2011 07:11:48 GMT

Summary

[ G.993.2 (2006) Amendment 6 (11/10) ] - New Annex L and revision of channel initialization policy

jeu, 21 d�c 2011 07:09:45 GMT

Summary

Amendment 6 to Recommendation ITU-T G.993.2 (02/2006) includes the following:

1)�� ITU-T G.993.5-friendly ITU-T G.993.2 operation in the downstream direction.

2)�� Revision of CI policy = 1 and addition of new CI policy = 2.

[ G.993.2 (2006) Amendment 6 (11/10) ] - New Annex L and revision of channel initialization policy

jeu, 21 d�c 2011 07:09:45 GMT

Summary

Amendment 6 to Recommendation ITU-T G.993.2 (02/2006) includes the following:

1)�� ITU-T G.993.5-friendly ITU-T G.993.2 operation in the downstream direction.

2)�� Revision of CI policy = 1 and addition of new CI policy = 2.

[ G.107 (12/11) ] - The E-model: a computational model for use in transmission planning

mer, 20 d�c 2011 15:39:01 GMT

Summary

Recommendation ITU-T G.107 gives the algorithm for the so-called E-model as the common ITU‑T transmission rating model. This computational model can be useful to transmission planners, to help ensure that users will be satisfied with end-to-end transmission performance. The primary output of the model is a scalar rating of transmission quality. A major feature of this model is the use of transmission impairment factors that reflect the effects of modern signal processing devices.

In the 2000 version of this Recommendation, an enhanced version of the E-model was provided in order to better take into account the effects of room noise at the send side, and quantizing distortion. With the 2002 version, the impairment due to random packet loss was included in a parametric way for different codecs. Since the 2003 version, an enhanced modelling of quality in case of low talker sidetone levels is provided. The 2005 version enabled more accurate quality predictions for codecs under (short-term) dependent packet loss. The 2009 version included an Appendix II describing a provisional impairment factor framework for wideband speech transmission. This Appendix has now been updated, in favour of a new Rec. G.107.1. A reference implementation is given in Appendix III.

The online version of this Recommendation includes an electronic attachment containing a reference implementation of the E-Model in PHP4 scripting language. This electronic attachment is available free of charge on the ITU publications website at http://www.itu.int/rec/T-REC-G.107.

[ G.9955 (12/11) ] - Narrow-band OFDM power line communication transceivers - Physical layer specification

mar, 19 d�c 2011 15:15:44 GMT

Narrow-band OFDM power line communication transceivers - Physical layer specification

[ G.9955 (12/11) ] - Narrow-band OFDM power line communication transceivers - Physical layer specification

mar, 19 d�c 2011 15:15:44 GMT

Narrow-band OFDM power line communication transceivers - Physical layer specification

[ G.9956 (11/11) ] - Narrow-band OFDM power line communication transceivers - Data link layer specification

mar, 19 d�c 2011 15:13:45 GMT

Summary

Recommendation ITU-T G.9956 contains the data link layer specification for narrowband OFDM power line communications transceivers for communications via alternating current and direct current electric power lines over frequencies below 500 kHz. This Recommendation supports indoor and outdoor communications over low voltage lines, medium voltage lines, through transformer low-voltage to medium-voltage and through transformer medium-voltage to low-voltage power lines in both urban and in long distance rural communications. This Recommendation addresses grid to utility meter applications, advanced metering infrastructure (AMI), and other Smart Grid applications such as charging of electric vehicles, home automation, and home area networking (HAN) communications scenarios.

[ G.9956 (11/11) ] - Narrow-band OFDM power line communication transceivers - Data link layer specification

mar, 19 d�c 2011 15:13:45 GMT

Summary

[ G.107.1 (12/11) ] - Wideband E-model

mar, 19 d�c 2011 15:11:29 GMT

Summary

Recommendation ITU-T G.107.1 gives the algorithm for the wideband version of the E-model as the common ITU‑T transmission rating model for planning speech services that provide wideband (WB) speech transmission (50-7000 Hz). This computational model can be useful to transmission planners, to help ensure that users will be satisfied with end-to-end transmission performance. The primary output of the model is a scalar rating of transmission quality. A major feature of this model is the use of transmission impairment factors that reflect the effects of different types of degradations occurring on the entire transmission path, mouth-to-ear.

This WB-E-model is an adapted version of the narrowband (300-3400 Hz) E-model, typically referred to as "the E-model", which is described in [ITU-T G.107]. It does not replace the narrowband (NB) E-model. Instead, it describes a separate WB-version of the model that uses, within limits, similar concepts and input parameters as the NB E-model.

[ G.107.1 (12/11) ] - Wideband E-model

mar, 19 d�c 2011 15:11:29 GMT

Summary

[ G.7044/Y.1347 (10/11) ] - Hitless adjustment of ODUflex

sam, 16 d�c 2011 09:55:26 GMT

Summary

Recommendation ITU-T G.7044/Y.1347 defines hitless adjustment of ODUflex(GFP) (HAO) which provides a control mechanism to hitlessly increase or decrease the bandwidth of an ODUflex(GFP) connection in an OTN network.

[ G.7044/Y.1347 (10/11) ] - Hitless adjustment of ODUflex

sam, 16 d�c 2011 09:55:26 GMT

Summary

[ G.998.4 (2010) Amendment 1 (06/11) ]

sam, 02 d�c 2011 15:17:38 GMT

Summary

Amendment 1 to Recommendation ITU-T G.998.4 (2010) adds support for on-line reconfiguration (OLR), specifically bit swapping and seamless rate adaptation (SRA).

[ G.998.4 (2010) Amendment 1 (06/11) ]

sam, 02 d�c 2011 15:17:37 GMT

Summary

Amendment 1 to Recommendation ITU-T G.998.4 (2010) adds support for on-line reconfiguration (OLR), specifically bit swapping and seamless rate adaptation (SRA).

[ G.8032/Y.1344 (2010) Amendment 2 (02/11) ] - New appendix XI - End-to-end service resilience

sam, 02 d�c 2011 14:22:20 GMT

Summary

Amendment 2 to Recommendation ITU-T G.8032/Y.1344 provides a revised Appendix XI, which addresses situations in which an Ethernet service that traverses an Ethernet ring protection (ERP) protected ring may start and end outside that ring. In order to provide full service protection, three options are described in this appendix. One is an interaction between ITU-T G.8032/Y.1344 and ITU-T G.8031/Y.1342, a second is the usage of a modified sub-ring, and a third is the insertion of a non-ERP node in the ERP protected ring.

[ G.8032/Y.1344 (2010) Amendment 2 (02/11) ] - New appendix XI - End-to-end service resilience

sam, 02 d�c 2011 14:22:20 GMT

Summary

[ G.992.3 (2009) Amendment 4 (10/11) ]

sam, 02 d�c 2011 14:03:07 GMT

Summary

Functionalities covered in Amendment 4 to Recommendation ITU-T G.992.3 (2009) (also apply to Recommendation ITU-T G.992.5 by reference):

Correction to CIpolicy=1 �(corrigendum).
Extended valid values for L_p in L2 low power mode (amendment).
Extended valid values for the g_i gain scaling in L2 low power mode (amendment).

[ G.992.3 (2009) Amendment 4 (10/11) ]

sam, 02 d�c 2011 14:03:06 GMT

Summary

Functionalities covered in Amendment 4 to Recommendation ITU-T G.992.3 (2009) (also apply to Recommendation ITU-T G.992.5 by reference):

Correction to CIpolicy=1 �(corrigendum).
Extended valid values for L_p in L2 low power mode (amendment).
Extended valid values for the g_i gain scaling in L2 low power mode (amendment).

[ G.9973 (10/11) ] - Protocol for identifying home network topology

sam, 02 d�c 2011 14:00:35 GMT

Summary

Based on Recommendation ITU-T G.9971, Recommendation ITU-T G.9973 specifies the configuration management protocol, which is described in TTC JJ-300.00.�� This protocol is used to manage devices in IP Home Network for the purpose of showing the Layer 2 home network topology to the users.