Contents:

• Sayson Technologies - New Principal Sponsor!
• Best practices for SIP NAT traversal
• New Resources added to The SIP Center
• SIP to TCAP Gateway
• Fall 2005 VON Conference & Expo happens in Boston, MA
• WiMAX - Moving into stage 2
• 3G World Congress & Exhibition 2005
• The 2nd Annual Voice over IP Forum 2005
• SIP in the Mobile Environment
• IMS World Forum Conference and Exhibition

Regular Features:

• New SIP products and services
• New and popular titles in The SIP Center Bookstore
• Events diary
• SIP Center Principal sponsors
• Sponsorship information
• Safe and permanent unsubscribe at the bottom of this e-mail

When one door closes another door opens; but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us.
- Alexander Graham Bell

The SIP Center is very pleased to Welcome Sayson technologies as a principal sponsor. Sayson distributes and develops a line of telephone products suited to meet the needs of a wide range of organizations. Sayson provides standards- based analog and Voice-Over IP products to its strategic and OEM partners which include major suppliers, manufacturers and distributors throughout North America.

Check out their impressive product range here...

www.sayson.com

Ubiquity Software develops and markets SIP-based communications software for fixed and mobile service providers, System Integrators, Independent Software Vendors and OEM partners worldwide.

Ubiquity's award-winning SIP Application Server (SIP A/S) is a Java-based software platform that allows telecom service providers to develop and deploy next-generation converged communications services faster and more easily than using traditional methods. SIP A/S brings the distributed, open application development model of the Internet to telecommunications. This maximizes the ability of an application developer to reuse features and components from one service offering to another using open, familiar application programming interfaces (APIs). Migrating Internet development practices to the telecommunications industry enables service providers and applications developers to create and rapidly deploy different SIP-based applications across fixed and mobile networks. Examples of these applications include Voice-over-IP telephony, audio and video conferencing, unified messaging, Push-to-Talk, multiplayer online gaming, and other multimedia 'push' services.

www.ubiquitysoftware.com

A whitepaper contributed by Adrian Georgescu

Traversing NAT (Network Address Translation) is one of the issues that hinder SIP communications. Some background about the problem: With an ideal Internet, all devices would be able to communicate end to end without any intermediaries except routers. This assumes each device has a routable IP address, a public reachable Internet identity. In reality, today many of the devices connected on the Internet are using a NAT function present in the border router. While this stops the Internet to initiate connections to the device (bad for IP telephony or other forms of peer-to-peer communications), it also protects the users against malicious attacks. Using NAT, one may also connect multiple devices to the Internet by only using one public IP address. So NAT has both advantages and disadvantages.

Read the full whitepaper here >>>

Some other resources on SIP NAT Traversal...

IETF Drafts:
Best Current Practices for NAT Traversal for SIP
SIP Extensions for NAT Traversal

Commercial products and services

Network Magazine | IP Telephony and Network Address Translation ...

NAT traversal for SIP services - How does it work?

Windows Messenger in Windows XP: Working With Firewalls and Network Address Translation Devices

Using Asterix to avoid SIP NAT Traversal problems

I'm sure there are many more resources out there. If you have one you would like to add to The SIP Center, please let me know.

JAVA JAIN JSLEE JSIP

enum.at SIP TAPI Driver - It is GPL, based on AstTapi and eXosip2. It allows click2dial from any TAPI application (e.g. MS Outlook).

techwg - Mailing list for the SIP Forum Technical Working Group

cafesip.org - CafeSip.org offers a suite of open-source tools and applications that will help you to create customized SIP services and applications using the Java programming language. The software provided by CafeSip.org is FREE. You can extend them and you can freely re-distribute them for commercial and non-commercial purposes.

A whitepaper contribution from Ulticom

Next generation networks that are deployed using SIP need a simple way to access SS7 databases in order to offer comparable services to the incumbent fixed and wireless network operators. Signalware offers an integrated development platform for delivering SIP to TCAP gateway functionality. Signalware SIP, and SS7 protocols can be combined to offer a gateway application on open Solaris(r) or LinuxTM based server platforms.

Download here (PDF 0.98Mb) >>>

SIP Center Principal Sponsors:

Interactive Intelligence
Lucent
Mitel Networks
Motorola
Navtel Communications
Netrake
NMS Communications
Nortel Networks
Quintum Technologies
RADVISION
Sayson Technologies
Siemens
Sun Microsystems
Thinkengine Networks
Ubiquity Software
Ulticom
3com
ACE*COMM
AG Projects
Antepo
Avaya
Brooktrout Technology
Convedia
Data Connection
Ericsson
GL Communications
Hotsip
Hewlett Packard

Sponsorship opportunities

September 19-22, Boston Convention and Exposition Center

The Conference and Expo covers the critical IP communications convergence issues, from all angles. 4 days, 300+ speakers, 300+ exhibitors and attendees from more than 40 countries worldwide. Attendees include wireline, wireless and broadband service providers, technology companies, regulators and telecoms policy members, investors and press. Attention SIP Center Members, enter priority code SC1 and save $100 off multi-day conference packages.

Register today >>>

Successful deployment & implementation strategies to yield maximum ROI

28th & 29th September 2005 - 2 Day Congress 30st September 2005 - Interactive Workshops Berlin, Germany

Although WiMAX is still the most highly touted wireless technology today, it is also true that the first real WiMAX systems will be deployed by the end of 2005. Hear about the latest developments and learn from the only international case studies Available.

Further information >>>

November 14 - 18, 2005.
Hong Kong Convention & Exhibition Centre

The 10th Annual 3G World Congress & Exhibition is a unique gathering providing a global picture of the mobile and wireless communications industry. It attracts over 150 speakers and 1500 senior industry executives from all over the world. You can also showcase your products and services to over 8000 trade visitors and 150 exhibiting companies in Asia’s largest dedicated wireless show. Nowhere you can find ALL 3G and other emerging wireless technologies, service and applications under one roof!

Further information and regaistration >>>

7th – 8th September 2005, Intercontinental Hotel, Berlin

Discussions at this key event will focus on moving beyond the mere provision of cheap, commodities voice services and towards premium VAS and a highly personalised customer experience. They will present your company with immediate competitive advantage by accelerating the development of your VoIP strategy, contributing to the creation of sustainable, higher-margin revenue streams.

Gain from the insights of nearly 40 key speakers including:
Vonage UK, TeliaSonera International Carrier, BT Wholesale, Tiscali Deutschland, O2 Germany, France Telecom, Popular Telephony, Nimcat Networks, T-Com and many more...

Further information and registration >>>
or email paul_osmond@osneymedia.co.uk.
(Please quote 807SIPC).

6th – 8th September 05, Novotel Euston, London.

This event will help you understand and examine all aspects of SIP deployment within a range of critical applications and services. The event focuses on the mobile environment and presents real business case studies from top European operators including Mobilkom Austria, TeliaSonera, BT, Vodafone, Telecom Italia Lab and Belgacom. The inevitable scenario of fixed mobile convergence must not be ignored and in accordance with this the case for the fixed line operator is presented as well. The program is completed by a number of leading market vendors involved in the front line of SIP deployment.

Further information and registration >>>

October 13-14, Amsterdam.

Building on the huge success of the first ever global IMS conference which attracted over 200 attendees worldwide, Informa Telecoms & Media are now proud to present the 2nd IMS World Forum which will take place on the 12th - 14th October in Amsterdam.

Our comprehensive agenda will allow you to understand and examine all aspects of IMS which will be addressed by fixed and mobile operators as well as ISPs and leading vendors.

Further information and registration >>>

New SIP products and services added to The SIP Center

Whitepaper library

User Agent Downloads and 24 x 7 public SIP Application Server

What is SIP?

Latest SIP News and Announcements

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