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 Wednesday, June 01, 2005

AAP Announcement UPDATE NOTIFICATION

The following files relative to AAP have been updated since 2005-05-31

updated :          2005-05-31 18:07:21      
title :          [014] AAP Announcement No. 14, 1 June 2005, (SG 4, 15, 16, 17)
url :          http://www.itu.int/itudoc/itu-t/aap/announce/05-08/014.html
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Note : This is an automatic message for ITU-T/TSB Alternative Approval Process

 - For further questions, please contact TSB EDH at tsbedh@itu.int
 - For documentation, go to http://www.itu.int/ITU-T/aap/index.html 
 - Comments on Recommendations under AAP should be submitted by filling the appropriate forms in each Study Group AAP web page and sent to the relevant Study Group email address

More on AAP

 

Wednesday, June 01, 2005 12:54:48 PM (W. Europe Standard Time, UTC+01:00)  #     | 
ITU-T's Study Group 15 has agreed on design guidelines for optical fibre submarine cable systems.

Submarine cable systems form a very important part of the world's ICT network infrastructure with cables linking all the world's continents except Antarctica. And as demand for increased transmission capacity increases, owners of these networks are keen to optimize their investments, because laying new submarine cables is an expensive and difficult business.

The guidelines appear in a supplement to ITU-T Recommendations on the topic of submarine cable systems (Supplement 41, to the G series of ITU-T Recommendations), and allow for the incorporation of traditional technology (e.g. WDM systems, erbium doped fibre amplifiers) as well as new technology including new generation forward error correction (FEC) and Raman amplifiers.

According to the expert authors, the document has been produced with a key objective to detail the main technical issues to be taken into account in order to achieve a link's longest distance, with maximum reliability.

The supplement describes considerations for repeatered, repeaterless and optically amplified systems supporting synchronous digital hierarchy (SDH) and optical transport network (OTN) signals. Repeaterless submarine cable systems are used for terrestrial network extensions in cases where submarine distances up to about 350 km are to be covered. Repeatered submarine systems are used for long haul, large capacity transmission by using submerged optical amplifiers in order to cross distances up to transoceanic lengths.

Wednesday, June 01, 2005 10:39:33 AM (W. Europe Standard Time, UTC+01:00)  #     | 
 Friday, May 27, 2005
A new ITU-T Recommendation specifies the characteristics for devices that address a phenomenon known as polarization mode dispersion (PMD) in optical fibres. PMD is caused by a difference of the propagation speed in different polarisations of the light travelling through a fibre. PMD is induced by distortion of the light in optical fibres that occur as a result of the manufacturing process, the way it is laid in the ground, around corners etc.

PMD becomes an increasingly serious problem as the bit rate and the length of optical transmission systems increase. As a result, PMD compensation (PMDC) is an important technology for very high rate long distance systems. For instance at 10Gbit/s PMD is manageable for currently existing long-haul dense wavelength division multiplexing (DWDM) systems but at 40Gbit/s compensation may become necessary.

While there has been knowledge of the phenomenon for some time the PMD-induced penalties such as distance and bit rate limitations have often been considered too difficult or expensive to deal with, and so the telecommunication industry has had to learn to live with the problem. There have been limited efforts to develop solutions which have not evolved into successful commercial products.

In order to address the problem in a more efficient manner and stimulate a market for PMD compensating devices, operators have driven this ITU-T work. By agreeing on a set of characteristics for these devices, operators can look forward to the availability of products that will be more mature and will cost less than developing in-house solutions. It is expected that operators may also see reduced expenditure because it is thought that the use this technology will reduce the need for electro-optical regenerators (devices that break a signal down in order to restore it to its original quality).

Future work of the group that has produced this Recommendation will look at similar devices called adaptive dispersion compensators for another phenomenon called chromatic dispersion that also limits data rates and transmission distances in optical fibres.

Friday, May 27, 2005 12:54:31 PM (W. Europe Standard Time, UTC+01:00)  #     | 
A new standard from ITU-T's Study Group 15 gives network operators the ability to deploy multi-vendor dense wave division multiplexing (DWDM) systems in a metro environment. Defining specifications for interoperability in this field is seen as a ground-breaking achievement, where previously there has been domination by proprietary systems.

WDM technology is used by the owners of optical fibres to maximise their capacity. The technology achieves this by simultaneously operating an optical fibre pair at more than one wavelength. Since operators wish to maximize their cable plant investments and deploy increasingly bandwidth hungry services in a multi-vendor environment, standards development in this field is seen as crucial.

Until now DWDM systems, which have the capability of carrying a high number of channels (up to 80) on a single optical fibre pair, have been deployed in core fibre networks that cover great distances. A different WDM technology CWDM (the C stands for coarse) was the first standardised solution for metropolitan areas, but CWDM systems only have the capability of carrying a limited number of channels (up to 12 now, but in the future 16).

This standard (ITU-T Recommendation G.698.1) has been driven by operators and allows them to benefit from the greater capacity of DWDM systems in metropolitan environments while being able to deploy system elements from multiple vendors. The current version of this Recommendation covers distances in the range of 30 - 80 km.

These new specifications have been made possible by the use of a fundamentally different methodology to that used previously according to the experts who developed it. The so-called 'black-link'-approach is seen as a new direction in the standardization of WDM systems, providing a powerful tool to enable agreement on multi-vendor interoperability in a previously proprietary environment.

Friday, May 27, 2005 12:52:45 PM (W. Europe Standard Time, UTC+01:00)  #     | 

ITU-T has completed the specifications necessary for telecoms operators around the world to offer a ‘super’ triple play of video, Internet and voice services.

The ITU-T Recommendation for very-high-bit-rate digital subscriber line 2 (VDSL2) will allow operators worldwide to compete with cable and satellite operators by offering services such as high definition TV (HDTV), video-on-demand, videoconferencing, high speed Internet access and advanced voice services including VoIP, over a standard copper telephone cable.

VDSL2 will offer consumers up to 100 Mbps up and downstream, a massive ten-fold increase over the more common ADSL. Essentially it allows so-called ‘fibre-extension’ bringing fibre like bandwidth to premises not directly connected to the fibre-optic segment of a telecoms company’s network.

As well as addressing increasing consumer demands, VDSL2 offers telecom carriers a solution that promises to be interoperable with the ADSL kit that many operators already have in place. This interoperability will make the migration of customers to VDSL2 much simpler. Another important feature of VDSL2 is that it will work in both legacy ATM networks and next generation IP based networks.

VDSL2 is seen by many operators as an ideal accompaniment to a fibre to the premises (FTTP) rollout, where for instance fibre is supplied direct to an apartment block and from there copper cable is used to supply residents with high-speed VDSL2.

Yoichi Maeda, chairman of the Study Group responsible for the work said: “We have leveraged the strengths of ADSL, ADSL2+, and VDSL to achieve the very high performance levels that you will see with VDSL2. It looks set to become an extremely important feature of the telecommunications landscape and is a landmark achievement for our members, many of whom were relying on this Recommendation in order to take their businesses to the next level.”

The publication of standardized specifications in an ITU-T Recommendation (G.993.2) means that operators can avoid being locked into a single vendor. As well as the economic advantages that this may bring it also means that operators can select the best solutions according to their needs.
Friday, May 27, 2005 12:49:03 PM (W. Europe Standard Time, UTC+01:00)  #     | 
 Thursday, May 26, 2005

2nd Meeting of APSC TELEMOV
ITU Headquarters, Geneva
6 June 2005

Announcement

Electronic Registration form

More on APSC

Thursday, May 26, 2005 9:11:39 AM (W. Europe Standard Time, UTC+01:00)  #     | 
 Friday, May 20, 2005
  • Commonwealth of Australia -  30 000 AUD
    Purpose: Recruitment of an expert to act as Technical Liaison Group representative to the ICANN Board for the year 2005
  • AULM SA - 5 500 CHF
    Purpose: Finalization of the telebiometrics database, SG 17

[more..

Friday, May 20, 2005 3:16:18 PM (W. Europe Standard Time, UTC+01:00)  #     | 
 Tuesday, May 17, 2005

17 May – World Telecommunication Day will see the launch of a new ITU-T communications centre - The Lighthouse.

The Lighthouse will provide a user-friendly and alternative view of ITU-T, shedding light on activities, past, present and future by offering non-technical explanations of work areas, news, features and FAQs.

While the e-Flash will still be published monthly, to get a real up-to-date feel of the goings-on at ITU-T check The Lighthouse’s live news feed.

The news feed, using a system called RSS is divided into channels (NGN, QoS, multimedia etc.) that can be subscribed to individually. So, for example, if you are just interested in stories on NGN, subscribe to this channel and news will be delivered to your desktop as soon as it is published.

Additionally, The Lighthouse will carry weightier feature stories and technical papers. These articles will be written by TSB staff, commissioned from or submitted by industry experts (members and non-members), academics or ITU’s regional offices. If you are interested in submitting material for this purpose please contact standards@itu.int.

Tuesday, May 17, 2005 11:18:55 AM (W. Europe Standard Time, UTC+01:00)  #     | 

ITU members are increasingly signalling the interest of the telecommunications community in grid computing. The technology is under study by the Technology Watch within ITU-T. And following discussions between the Global Grid Forum (GGF) and ITU-T, a workshop on telecoms and grids is planned for 2006.

On behalf of GGF, Franco Travostino of Nortel gave a presentation at the recent Study Group 13 meeting in Geneva. In it he gave an introduction to the work of the forum, also explaining the basics of grids.

Travostino describes grid computing as a software platform for distributed participants to form a virtual organization, securely share resources, and engage in coordinated problem-solving activities.

There are a number of areas of interest for the telecoms industry. At a simple level, telcos could use grids internally, for billing and simulations for example. They could also offer grid managed services, or act as service brokers.

Travostino pointed out that the discussion on grids involves more than just how to provide bigger pipes. There are other issues that may be of interest to ITU-T, such as how to control the network, how to manage dynamic provisioning and how to provide collision-free addresses (IPv4 <-> NAT).

Tuesday, May 17, 2005 11:16:22 AM (W. Europe Standard Time, UTC+01:00)  #     | 

Work has been completed in Study Group 17 on the development of Recommendations that could see web services (web-based application to application communication) being adopted in areas such as mobile telephony.

Web services are a standard way for all types of software to interoperate across programming languages, platforms and operating systems. They give a structured way to format data - using XML - such that it is easier for different types of programs to communicate. An example of an area that might benefit from increased efficiency in this area would be the integration of enterprise applications in a large supply chain.

The issue that the new Recommendations address is that structured data in XML contains a lot of redundant information which slows processing down. And, because of this the adoption of web services in certain areas such as mobile telephony where constraints include bandwidth and the ability of mobile devices to process data, have been limited.

The new Recs (X.892 and X.891) solve the problem using ITU notation language ASN.1 to specify alternative and more efficient codings of structured data, both in terms of size and processing speed.

Tuesday, May 17, 2005 11:14:00 AM (W. Europe Standard Time, UTC+01:00)  #     | 

Following an oversubscribed first course aimed at managers involved in standardization, IEC, ISO and ITU, the three organizations that make up the World Standards Cooperation initiative (WSC), recently staged another event.

The thirty or so people who attended the Standardization Community Management Course, 11-24 April, Geneva hailed from a wide range of backgrounds, sharing just the need to understand more of the standardization process.

With titles like 'What are international standards?', 'Why are international standards essential?' and 'How are international standards used?', plenary sessions focused on the general, with breakout sessions hosted by the individual organizations going into more detail on their working practices.

Other sessions focused on the history of standards, the importance of standardization, legal issues, the working practices of the three organizations and how standards are marketed.

Attendees were taken on a field visit to see 'standards in action' at a close-by Swisscom telephone exchange. Among highlights were a description of what part standards will play in the offering of 'triple-play' (voice, video, data) services.

Tuesday, May 17, 2005 11:11:10 AM (W. Europe Standard Time, UTC+01:00)  #     | 

A tool recently made available on the ITU-T website gives users a new way to look at ITU-T Recommendations.

The tool was developed to address a need of members to better manage the assignment of Recommendation numbers. But it also gives an excellent overview of recommendations showing in a 'tree structure' the different series and sub-series, the study groups responsible for them, recommendations that are shared by different study groups, recently withdrawn recommendations etc.

One Study Group chair said: “Having wrestled with trying to find a better way to list recommendations allocated to study groups, I am very pleased to see the substantial progress this tool represents. It is a huge step forward. I think this tool will stimulate all the study groups to review what is under their responsibility and to go about rationalizing the issues in assignments, names, groupings, etc.”

See the tool here.

Tuesday, May 17, 2005 11:07:17 AM (W. Europe Standard Time, UTC+01:00)  #     | 

In between the meetings of two lead technical groups working on image and video compression, ISO/IEC's JPEG and ITU-T's Study Group 16, ITU will host a workshop on Video and Image Coding and Applications (VICA) at ITU headquarters, Geneva, 22 to 23 July. 
Key experts will join users to review the development, assessment and application of video and image coding and to discuss and start work on an action plan and a roadmap for VICA standardization.

Presentations will instigate discussion on how standards work in the field, including how next generation networks (NGN) can support the development of so-called ubiquitous services - any device, anytime, anywhere. Current work on home network environments will also be taken into account.

Also at the event there will be an interoperability demonstration showing various products using related standards.

All interested parties are free to attend.

Tuesday, May 17, 2005 11:03:09 AM (W. Europe Standard Time, UTC+01:00)  #     | 

ITU-T will lend its support for a second time to an event on the topic of wideband speech quality in terminals and networks held by ETSI. The last event concluded that there is a lack of speech quality specifications and adequate tools for assessment and planning of wideband speech communication systems. This is a critical issue as wideband systems are to be one of the driving factors in next generation networks (NGN).

To be held 22-23 June, Mainz, Germany, this workshop will provide an overview of developments since last year's event, including the voice quality prediction tool or e-model designed by ITU-T experts (see previous e-Flash story). Additionally the event will examine in technical detail the general aspects of terminal testing and reference points for wideband terminals, and there will be discussion on the requirements for wideband applications that are specific to wireless and VoIP scenarios.

Tuesday, May 17, 2005 11:00:52 AM (W. Europe Standard Time, UTC+01:00)  #     | 

A draft ITU-T definition of the term 'open standards' has been developed by ITU-T's group of experts on intellectual property rights (IPR). 
It's deemed necessary to do this to avoid confusion given the various different interpretations of the term. This way when 'open standards' are referred to in discussion, it is clear exactly what is being talked about - at least in ITU-T.

The draft definition can be seen here.

Tuesday, May 17, 2005 10:40:23 AM (W. Europe Standard Time, UTC+01:00)  #     | 

Lighthouse launched on World Telecommunication Day, 17 May 2005, offers a user-friendly and alternative view of ITU-T.

Offering dynamic content, news, features and FAQs, the Lighthouse will shed light on ITU-T`s activities, past, present and future.

Discover!

Tuesday, May 17, 2005 9:34:14 AM (W. Europe Standard Time, UTC+01:00)  #     |