Access Spectrum, LLC, and 4RF Communications Announce New 700 MHz Private Wireless Solution.

Business Editors/High-Tech Writers

UTC Telecom 2004

BETHESDA, Md.--(BUSINESS WIRE)--June 15, 2004

New product delivers longhaul T1 wireless solutions for

public safety, cellular and utility networks

-- Backhaul to public safety command and control centres

-- Inter-connection to cellular backbone networks and switch

locations

-- Point-to-point transmission for utility remote monitoring and

control applications

ACCESS SPECTRUM, LLC, the premier provider of Exclusive Private Wireless(R) (XPW) solutions for voice and data communications, and 4RF Communications, a world leader in the development of wireless access solutions will jointly showcase the Aprisa(TM) XE 700 MHz point-to-point digital radio at UTC Telecom 2004.

The digital radio optimises the distance capability of the new 700 MHz private wireless spectrum to enable connectivity between two fixed points over distances up to 100 miles for the transmission of internet, voice and data traffic. The radios can be deployed in a variety of linking applications for public safety and cellular communications networks and utility company remote monitoring and control systems.

The Aprisa XE radio transports voice and data, including IP, for phone, mobile radio, video, SCADA, telemetry, teleprotection, and signalling applications. Announced capacities range from fractional T1 to four T1 configurations with QPSK to 64 QAM modulation. The multiple T1 access capability in the guard band reduces utility and cellular companies' reliance on leased T1 services from incumbent wireline carriers.

The 700 MHz band enables extremely reliable transmission over long distances and difficult terrain, particularly over water and partly obscured paths. As a privately managed band, 700 MHz permits exclusive frequency assignment guaranteeing carrier-class performance and minimizing interference. The RF design of the Aprisa radio integrates high-performance digital processing techniques including FEC (Forward Error Correction), interleaving, and advanced radio equalization to minimize transmission degradation from path impairments. Sophisticated modulation techniques in the radio platform enable highly efficient transmission in narrow channels, enabling optimum use of available spectrum.

The radio features an in-built channel bank, which reduces costs by eliminating the requirement for external equipment. Advanced plug-in, customer-configurable interface modules facilitate ease of integration with both legacy and new generation network elements. A suite of embedded element management applications for remote configuration and diagnostics, and SNMP management and monitoring, minimizes field service calls and reduces the cost of installation and ongoing management supervision.

"The 4RF Aprisa 700 MHz microwave radio will play an important role in helping public safety entities and utilities such as energy companies to reduce costs and increase efficiencies, while meeting the challenges of critical infrastructure communication," says Access Spectrum President, Mark E. Crosby. "Our relationship with 4RF represents an outstanding opportunity to capitalize on our respective organizations' expertise and achieve our mutual objective of offering customers improved private wireless communications capabilities."

Note

This device has not yet been authorized as required by the rules of the FCC. This device may not be sold, leased, or offered for sale or lease, until FCC authorization has been received.

About 4RF Communications

4RF Communications is in the vanguard of digital microwave radio and wireless product development. The company provides high-performance access solutions to leading network operators, and telecommunication and utility companies for wireless applications throughout the world. Learn more about the company at http://www.4rf.com/

About Access Spectrum

Access Spectrum provides Exclusive Private Wireless Solutions that enable companies to reduce operating costs, improve response times, and increase safety by maintaining control of wireless voice and data communications networks.

Access Spectrum and its network of Exclusive Private Wireless(R) Solutions Providers deliver the equipment, engineering and bandwidth for end-to-end implementation of wireless voice and data communications systems. Unlike shared or unlicensed wireless solutions, Exclusive Private Wireless delivers the absolute control, flexibility and long-term reliability needed by critical infrastructure providers, including utility, petrochemical, transportation and manufacturing companies, and public safety organizations. Visit the company online at http://www.AccessSpectrum.com/