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THE POWER OF PHYSICAL LAYER

xG Flash Signal is a physical layer technology, and this powerful attribute represents a key part of its extraordinary value. Physical layer (commonly abbreviated “PHY”) refers to the lowest layer of the OSI Reference Model. The physical layer is unique compared to the other layers of the model, because it is the only one where data is physically moved across the network medium. All of the other layers sitting above it must transmit information down the protocol stack to the physical layer, where they are actually sent out over the network.

The ramifications of this are significant. Because Flash Signal resides at the lowest level and is not a legacy technology, it is agnostic as to transmission protocols used higher in the “stack”. As a result, it can be optimized for each specific application, providing a core solution for developers to create their own customized applications. This gives product designers the flexibility to solve those hurdles specific to their industry, such as DSL range limitations, piecemeal spectrum availability, or supplying bandwidth for hungry applications.

This application-defined implementation and ability to exist in multiple configurations make Flash Signal highly adaptable to solving communications problems in numerous vertical markets. The technology can be used to enhance any type of communication including voice, data, or video, in both wired and wireless forms. It stands to improve the performance and profitability of not only broadband wireless networks, but can also boost data capacity of wired systems that uses RF transmissions, such as DSL and coaxial cable networks. For example, the technology could extend the range of DSL services while maintaining data rates, allowing phone companies to add new subscribers. It could also improve delivery of emerging services such as high definition TV (HDTV), video on demand, and Internet Protocol television (IPTV).  The benefits of Flash Signal can be applied in a wide array of markets, such as public safety, police, homeland security, emergency services, and municipal networks.

It is the flexibility and adaptability of Flash Signal technology that will make it the essential component of next-generation applications and devices, and positively impact a huge cross section of vertical markets.

The first example of an application of Flash Signal technology is the xMax Mobile VoIP Service, which xG will be commercializing. Longer term, xG will seek to deliver Flash Signal as a PHY chip for use in multiple products across both wired and wireless markets, ultimately powering an extensive array of mass-market communication devices.