TOGEWAnet Has Achieved Another Milestone by Enabling WeRoam To Work with Multiple GSM Operators...

Business Editors & High-Tech Writers

3GSM World Congress 2003

BERN, Switzerland--(BUSINESS WIRE)--Jan. 21, 2003

Industry Premier, multi-provider WLAN roaming a reality

By achieving the first implementation of a working integration between multiple GSM

Based on the preparatory work that has been done by the industry, through suppliers, operators, enablers and most importantly by various standardization bodies, the standards for WLAN/GSM roaming are surfacing. Although not all details have yet been defined, the breakthrough of SIM based Roaming for WLAN/GSM can already be seen today. TOGEWAnet, together with various experts, has actively contributed to the work on standardization and in doing has consequently orientated its product WeRoam(R) to an open standard. The EAP SIM standard will thereby form the general basis for the future. By leading the way WeRoam(R) will enable the commercial breakthrough of WLAN/GSM-interoperability and will deliver worldwide EAP SIM based WLAN Roaming as requested by customers around the world.

WeRoam(R) provides a service bureau and aggregation service for Wireless ISPs and Mobile Operators wishing to enter the WLAN market. WeRoam(R) builds on its association with Comfone's GSM SS7, billing and clearing service, to enable a similar range of roaming services for the WLAN market. Through WeRoam(R), WISPs may gain connectivity with the networks of Mobile Operators, and vice versa, so that a common roaming platform is created with an extensive worldwide footprint. This is done with minimal up front cost and maximum use of existing network resources.

WeRoam(R) is based on software from Transat Technologies that supports SIM-based authentication and billing within WLAN. WeRoam(R) enables network roaming using the existing SS7 inter-operator signalling infrastructure. The end-user experience is akin to using a mobile phone -- whichever network he or she is on, the laptop or PDA will authenticate with the "home" network, and create a billing record in the home network. The user does not have to intervene with username, password, or any other such complication. The use of a SIM card (in fact a type of smart card) gives the operator the proven security of GSM phones and enables WLAN users to be provisioned and managed in the same way as mobile phone users. The system also supports users who do not have a SIM card or cellular account by interconnecting with existing RADIUS based billing and authentication systems. In this case, the benefits of cellular to WLAN integration are reduced but existing subscribers and "walk-in" customers may still use the hotspots.

According to Toni Stadelmann, CEO of TOGEWAnet, "This breakthrough in the development of GSM/WLAN roaming will expedite the delivery of truly Global WLAN Roaming services to traveling users. As WeRoam(R) keeps adding WLAN Hotspots to its coverage of WLAN Hotspots, which today offers the largest SIM based footprint in the world, the WeRoam(R) coverage will only get closer to the worldwide WLAN coverage users would like to have."

In order to share its knowledge and experience with a broad audience TOGEWAnet will demonstrate its Multi-operator - Multi WLAN roaming capability during the forthcoming 3 GSM World Congress in Cannes. In addition Carlo Dietiker, Director Products of TOGEWAnet, will deliver a key-note speech on the subject of WLAN roaming during the same congress.

About TOGEWAnet

The Swiss company TOGEWAnet AG, established in 2001 and owned by TOGEWA Holding, specialises in mobility management and roaming optimisation solutions for the mobile and wireless telecommunications sector. In May 2002 TOGEWAnet announced a strategic partnership with Infonet Services Corporation. Discussions are on-going to further extend the partnership. In July 2002 TOGEWAnet successfully introduced and demonstrated the first operational versions of its pioneering WeRoam(R) service, which received a great deal of interest from many players within the telecommunications industry. In October 2002 WeRoam(R) has successfully been implemented in the core GSM network of various operators to enable these operators to have a swift and cost efficient entrance into the world of WLAN.

TOGEWAnet's WeRoam service facilitates the seamless integration of WLAN and GSM network technologies, enabling global roaming for WLAN services and thereafter facilitating automatic and secure roaming between WLAN, GSM and GPRS. Key solutions found in GSM technology have been adopted to make up the WeRoam(R) service, which provides secure authentication (based on GSM SIM and Radius), signalling conversion, clearing and settlement services (based on TAP -- Transferred Account Procedure) and management of contractual roaming agreements. The subscriber will benefit from greater roaming coverage and the convenience of swapping between different standards with the additional advantage of having a single identity, thus receiving only one bill from his home network operator despite having visited a number of operators and countries and having used different mobile standards.

Close ties with its sister company, Comfone AG, also founded by the umbrella company of TOGEWA Group, allow TOGEWAnet to benefit from Comfone's depth of experience in offering a wide range of roaming services to GSM operators. For more information, please visit www.weroam.com.

Toni Stadelmann, CEO

Tel.: +41 31 341 1220

E-Mail: toni.stadelmann@togewanet.com

About Transat Technologies

Transat provides carrier grade software systems for the integration of Wireless LAN and Cellular Networks. Transat's software is in commercial service, enabling SIM- or smart-card based authentication, controlling network access and inter-network roaming. Uniquely, Transat creates transparency of services between 3G or GSM networks and WLAN networks. Public access and enterprise systems are supported. Transat is headquartered in Southlake, Texas, USA, and is funded by Acorn Campus, Bay Partners, Genesis Campus and Intel Capital. For more information, please visit www.transat-tech.com.

John Baker, CEO,

Mobile: +1 817 703 5369

E-Mail: jbaker@transat-tech.com.