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 Friday, September 09, 2005

The recent Asia Pacific Telecommunity (APT) Symposium on Network Security and SPAM presented background information, detailed the current situation, new developments and steps ahead on network security and fighting spam in the Asia-Pacific region.

TSB presented highlights of ITU-T work on security, also detailing the level of participation of the AP region in Study Group 17, the ITU-T group that looks at security issues. Mr Jianyong Chen (ITU-T SG 17 Vice Chair from China) also attended the event and made a detailed presentation on current SG 17 work. He also chaired two sessions. In addition TSB presented the results of the ITU WSIS Thematic Meeting on Cybersecurity held in Geneva, 28 June 1 July 2005.

The meeting was organized in three full-day sessions and was attended by some 70 representatives from the Asia-Pacific area. The first day was dedicated to cybersecurity, the second to countering spam, and the third to cooperation initiatives. The complete set of presentations at the meeting can be downloaded here.

The meeting invited AP countries to step-up their capability building initiatives and encouraged APT to increase its collaboration on network security and spam with international organizations working in the area, ITU-T in particular.

 

Friday, September 09, 2005 1:07:36 PM (W. Europe Standard Time, UTC+01:00)  #     | 
 Tuesday, September 06, 2005

Next meeting of TSAG - Telecommunication Standardization Advisory Group

Geneva, 7-11 November 2005

Registration Form

See TSB Collective-letter 2/TSAG for more information.

TSAG Home

Tuesday, September 06, 2005 1:27:26 PM (W. Europe Standard Time, UTC+01:00)  #     | 
 Monday, September 05, 2005

Please take ten minutes of your time to complete this questionnaire, part of the under the European Commission project, NO-REST.

The main objective of the project is to gain new and more in-depth insight into the economic impact of standards in the field of information and communication technologies (ICT). To this end the organizers are collecting data from participants in the standards setting process.

The results could be beneficial in helping to shape the way that ITU-T works in the future.

 

Monday, September 05, 2005 4:23:33 PM (W. Europe Standard Time, UTC+01:00)  #     | 
 Thursday, September 01, 2005

AAP Announcement UPDATE NOTIFICATION

The following files relative to AAP have been updated since 2005-08-31

Group : aap
updated :          2005-08-31 16:16:11      
title :          [020] AAP Announcement No. 20, 1 September 2005 (SG 15, 17)
url :          http://www.itu.int/itudoc/itu-t/aap/announce/05-08/020.html
-------------------------------------------------------------
 
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

Thursday, September 01, 2005 4:33:06 PM (W. Europe Standard Time, UTC+01:00)  #     | 
 Wednesday, August 24, 2005

Recommendation H.460.20 consented at the last Study Group 16 meeting solves the problem of how to provide location information in calls generated to/from H.323 systems. The Recommendation allows these systems such as VoIP or videoconferencing to convey information that could be a URL, an e-Mail, a postal code, or a mobile telephone number. This is much more than can be achieved with a traditional public switched telephone network (PSTN) call.

Currently calls generated or terminated in H.323 systems do not carry - end-to-end details of where that call is coming from. This information is needed by the public switched telephone network (PSTN) for emergency services, more accurate billing and for routing the call. Additionally it is useful, for instance, in applications such as telemarketing where calls can be routed according to their origin. 

Technically H.460.20 gives H.323 the ability to convey the location number present in ISUP the system that determines the set-up, co-ordination and taking down of calls. Without this ability location information is lost at the interworking edge between the IP network and the PSTN. An additional benefit is that it simplifies interworking with the session initiation protocol (SIP).

Wednesday, August 24, 2005 8:36:57 AM (W. Europe Standard Time, UTC+01:00)  #     | 

ITU-T has agreed to a revision of a Recommendation that experts say is an important step towards solving the problem of lengthy call setups in 3G video telephony. Seen as a key issue to address, the resolution of this issue may help accelerate the market for 3G. 

According to SG 16 sources the standard has been successfully tested in products and many mobile operators and handset manufacturers have started implementation.

The revised ITU-T Recommendation H.324 speeds the initiation of 3G video sessions through the streamlining of the call set-up signalling that is necessary to establish the connection between two handsets and between a handset and a media server.

Previously setting up a typical video session required each end to send up to ten messages to the other terminal, each time waiting for a message to be received and acknowledged before sending the next one. And, if a message was not received, the sending device had to wait and finally time out before retransmitting. The delay introduced in this process led to long video call set-up times.

The new method eliminates the message queuing and time out issues. Now, all signalling is sent as a single batch to be processed by the receiving device. Missed messages, due for example to network errors, are immediately detected by the receiving device and retransmission requests are spontaneously generated. This leads to much quicker call setup times, bringing video connectivity close to the same level of service as traditional telephony.

Key for many operators is that implementation will not require manufacturers to recall phones, also meaning that services may work on existing devices. Other advantages of the new approach include the fact that it is protocol and network independent, enabling connectivity with any other device, even if it is IP-based (e.g. IP video streaming server or a PC-based video terminal) and meaning that it does not interact with underlying network protocols or codecs, enabling devices using the standard to operate even when roaming in other mobile networks.

Wednesday, August 24, 2005 8:35:06 AM (W. Europe Standard Time, UTC+01:00)  #     | 

A suite of ten new standards that provide security for IP media communications such as VoIP or videoconferencing got an update at the last meeting of ITU-Ts Study Group 16

The security framework outlined in the H.235 series of ITU-T Recommendations provides the protocols necessary for these media to be authorised and routed. Equipment using these standards can deliver connectivity without compromising security. 

With the help of the Recommendations, users communicating through IP media are authenticated and authorized so that their communications are protected against various security threats. Real-time multimedia encryption adds a further layer of security, protecting against call interception. The security countermeasures are designed to thwart service fraud, avoid service misuse and detect malicious message tampering. H.235 also gives the ability to provide a greater level of security using public key infrastructure (PKI) certificates. 

Additionally, two new security profiles were added to provide [H.235.8] key exchange using the secure real-time transport protocol (SRTP) in H.323 networks and [H.235.9] to allow discovery of security gateways in the signalling path between communicating H.323 entities, in order to preserve signalling integrity and privacy.

Wednesday, August 24, 2005 8:33:13 AM (W. Europe Standard Time, UTC+01:00)  #     | 

Standards that may accelerate the adoption of VoIP in corporate environments and resolve an issue that has slowed down the adoption of videoconferencing have been completed by ITU-T.

The standards from ITU-Ts multimedia Study Group (Study Group 16) provide a robust and easy to implement solution that will allow any H.323 based system communicating on an IP network to more easily communicate across the boundary imposed by NAT or firewalls (FW).

Videoconferencing and VoIP have long been plagued with problems when trying to work across network address translation (NAT) and firewall boundaries. Despite previous attempts to address the issue, no standardized way of dealing with the problem has emerged until now. 

Without the ITU solution many network managers and operators have found that the only way to allow inbound VoIP calls in a firewall-protected environment is to leave a permanent hole from the outside world, open a range of port numbers for VoIP use, or locate devices outside of the firewall. Clearly, these solutions violate even the most basic security policies. 

Recommendation H.460.18 enables H.323 devices to exchange signalling and establish calls, even when they are placed inside a private network behind NAT/FW devices. These extensions, when used together with Recommendation H.460.19, which defines NAT/FW traversal for media, enable upgraded H.323 endpoints to traverse NAT/FW installations with no additional equipment on the customer premises. Alternatively, the H.460.18 and H.460.19 functionality may be implemented in a proxy server, so that unmodified H.323 endpoints can also benefit from it.

Work on the related Recommendation H.248.37 was also finished at the Study Group meeting. Session border controllers (SBCs) are becoming an important part of the Internet infrastructure, and some SBCs are being split into media gateway controller (MGC) and media gateway (MG) components. One important function of a SBC is to perform network address and port translation (NAPT). H.248.37 allows the MGC to instruct a MG to latch to an address provided by an incoming Internet Protocol (IP) application data stream, rather than the address provided by the call/bearer control. This enables the MG to open a pinhole for data flow, and hence allow connections to be established. 

As well as these ITU-T Recommendations, Study Group 16 will shortly publish two technical papers on the topic: The Requirements for Network Address Translator and Firewall Traversal of H.323 Multimedia Systems and Firewall and NAT traversal Problems in H.323 Systems.

Wednesday, August 24, 2005 8:31:10 AM (W. Europe Standard Time, UTC+01:00)  #     |