Milpitas, Calif. and Newport, R.I. June 18, 2002 - Aperto Networks, a leading provider of next generation point-to-multipoint broadband wireless access systems, and TowerStream, the leading fixed wireless broadband provider in the Northeast United States, announced today that they will provide broadband access to the Wireless Communications Association (WCA) 2002 Conference at the World Trade Center in Boston from June 24-27, 2002.

TowerStream service covers the Boston Metropolitan area and is delivered using Aperto PacketWave^® 1000 base stations. This network, which includes the Prudential Tower on Boylston Street, currently serves over a hundred business customers in the heart of Boston.

With Aperto PacketWave 100 subscriber units at the World Trade Center on Seaport Boulevard, the TowerStream network will enable show attendees to experience several applications, including:

• High Speed Internet Access
• Wireless (IEEE 802.11/ Wi-Fi) Hot Spot Backhaul
• Voice over IP (using Vonage DigitalVoice Service and Cisco ATA)
• Video Conferencing over IP
• Streaming Video
• Multiple Traffic Flows with differentiated service classes based on application

Free broadband access will be provided at two Wireless Hot Spot locations at WCA:

1. Aperto Networks Booth #532 and surrounding area
2. WCA Speaker Session Rooms - Cityview I & II

Show attendees are invited to use the free broadband wireless access service using their WiFi equipped laptop computers for the duration of the WCA show. In addition, calls can be made to any location in the United States using VoIP services from telephones provided in the Aperto booth, to experience multi-services over the Towerstream network.

Other equipment and applications in Aperto's booth include complete solutions for 2.5 GHz, 3.5 GHz, 5 GHz frequency bands, as well as subscriber provisioning and web-based management tools.

Organized by the Wireless Communications Association, the 15th annual business conference and exhibition, http://www.wcai.com/events.htm, is scheduled from June 24 to 27, at the World Trade Center in Boston, Massachusetts. Exhibit Hours: Tuesday, June 25 from 1:30pm to 6:30pm and Wednesday, June 26 from 12pm to 5:30pm.

The companies will also speak on several sessions at the show:

Monday, June 24, 2002
10:30am - 11:15amWaterfront 2, World Trade Center
Jeff Thompson, TowerStream CTO, will participate in a conference meeting panel: "WISP Track: Telling the Story By Creating New Services In New England."

Tuesday, June 25, 2002
11:15am - 12:30pm
Cityview I, World Trade Center (Upper Level)
Dr. Reza Ahy, Aperto CEO and Chair, will participate in a panel discussion on "Next Generation Forum: Setting Operator Requirements for Business Applications."

Wednesday, June 26, 2002
10:15am - 11:15am
Cityview II, World Trade Center (Upper Level)
Philip Urso, TowerStream CEO, will participate in a session titled "Is There Any News Here? What Reporters Want to Know to Assess Local Impact."

About Aperto Networks
Aperto Networks is a leading provider of multiservice broadband wireless access systems. The company was founded to provide a breakthrough solution to one of today's critical network bottlenecks - last-mile broadband access. With practical, scalable systems and patent-pending technology that support new wireless builds and complement existing wireline broadband access technology, Aperto addresses service provider needs for rapid network deployment, multiservice scalability, ease of installation and cost-effectiveness. Aperto will dramatically shorten the lengthy provisioning cycles of broadband services by enabling rapid service provisioning across dense urban to suburban locations. Investors in Aperto include Alliance Ventures, Tyco Ventures, Innovacom (France Telecom), DMC Stratex Networks, Oki Electric Industry Company, Mitsubishi International Corporation, Ridgewood Capital, Satwik Ventures and Redwood Ventures. For more information on Aperto Networks, go to www.apertonet.com.

About TowerStream
TowerStream is the leading fixed wireless broadband provider in the Northeast. The company's last mile delivery leverages superior wireless technology developed jointly with partners such as Aperto Networks, Western Multiplex and Cisco. TowerStream presently serves New England markets, including the greater Boston and Providence areas, and is aggressively expanding coverage throughout the region. TowerStream delivers high-speed Internet access to commercial bandwidth users through second-generation point-to-multipoint fixed wireless broadband networks. TowerStream offers customers lower costs and greater reliability than traditional wire line networks, and provides bandwidth on demand and wireless redundancy. For more information on TowerStream services and offerings, please visit www.towerstream.com or call 401-848-5130.

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