Airvana to demonstrate 1xEV-DO Revision-A

November 15, 2005

Airvana announced it will demonstrate 1xEV-DO Revision A and advanced 1xEV-DO multimedia services such as Voice over IP (VoIP) and Multicasting at the 2005 3G World Congress and Exhibition. With the goal of enabling mobile broadband everywhere, these features will accelerate the delivery of innovative 3G services to consumers and mobile professionals. Airvana technology now powers 16 of the world's most dynamic commercial EV-DO networks.

The 3G World Congress and Exhibition takes place November 14-18, 2005, at the Hong Kong Convention and Exhibition Centre. Airvana's CEO, Randy Battat, will speak on the advantages of VoIP to operators, and CTO Vedat Eyuboglu will speak about the role of EV-DO broadcast and multicast in enabling mobile television. Airvana is located at booth #1021.

The advanced features on showcase will extend 1xEV-DO's lead over competing 3G technologies. By delivering these features to service providers, Airvana dramatically reduces the cost of delivering compelling mobile multimedia services to handsets and enables rapid adoption of 3G wireless technology.

"1xEV-DO is generating billions of dollars of additional revenue for CDMA operators worldwide and gives CDMA operators a competitive edge against other operators", said Randy Battat, CEO of Airvana, "1xEV-DO Revision A extends this lead by being the first 3G technology to offer carrier-grade, high-capacity VoIP." Airvana's 2005 3G World Congress and Exhibition demonstrations will include:

-- CDMA2000 1xEV-DO Revision-A - Rev-A provides the underlying technology to support new applications such as Voice over IP (VoIP), push-to-talk, push-to-multimedia, and video telephony. One of the key benefits of Rev-A is the 3-4x increase in uplink speeds. Since UMTS will not support a faster uplink until HSUPA is available, Rev-A will give CDMA operators a 2+ year advantage over UMTS operators. In addition, Rev-A is fully backward compatible with EV-DO Revision 0. With EV-DO Rev-A, service providers can seamlessly upgrade their networks to expand service offerings to deliver higher speed connections to their customer base.

-- Voice over IP (VoIP) - VoIP over 1xEV-DO will allow service providers to reduce their costs by converging their voice and data networks into one All-IP network, and to enhance their revenues by enabling the fast introduction of new services such as feature-rich voice, fixed-mobile convergence and high-performance push-to-talk.

-- Broadcast and Multicast Service - Airvana will demonstrate how operators can efficiently deliver rich multimedia content such as movie clips, news and sporting events simultaneously to a large number of mobile devices. Subscribers can either view live content or the content can be cached on the mobile device for later viewing.

In addition to the live demonstrations, on Thursday, November 17th, from 9:30 a.m. to 1 p.m., Airvana's CEO, Randy Battat, will be a panelist on the plenary keynote session on network infrastructure, wireless devices and semiconductor initiatives; he will speak about the competitive advantages VoIP gives CDMA operators. Airvana's CTO, Vedat Eyuboglu, will be a panelist on Thursday's Track 4 program (2:30 p.m. to 6 p.m.) on the role of broadcast and multicast in mobile TV and video streaming services.