Analysis of Eicon PHS wireless access Technology

It is a main trend of mobile communication development to realize Internet access through mobile communication system and reach the Internet at anytime and anywhere. However, from the current point of view, GPRS to wait until the end of the year in some countries, and because of the impact of technology and other factors, the real 3G products and services, the launch of a two-year period or so.

In the existing GSM system and CDMA system, the PHS system has been put into use in the data communication business with other mobile communication systems incomparable advantages, higher transmission rate, convenient access to the Internet and low price of the internet will make PHS become the majority of users of choice. At present, many telecom equipment developers in this area of research, the use of PHS wireless local telephone system for data communication will play an important role in the future wireless Internet.

In order to enlarge the function of PHS system and realize data communication by PHS, Japan introduced the standard PIAFS of PHS Internet access (PHS Internet access Forum Standard) in 1996, which provided a unified standard for multimedia service. The PIAFS protocol is an end-to-end protocol at the data link layer, which mainly solves the problem of PHS terminals accessing the Internet through the telecommunication network. It uses the open design concept, has the complete control function, with the PPP protocol to form the high quality reliable data channel, supports 32Kbps, 64Kbps data transmission and the Modem and so on, can not only make the wireless local area network for the mobile office, but also can conveniently access the Internet through the telecommunication network.

In Japan, PHS, which mainly uses voice services, was once in decline, and it was the launch of the PIAFS Internet access standard and its value-added services that made it rise again. About 5 million of PHS mobile phone users, 30%-40% is used to surf the internet, can be said that wireless Internet services can reflect the "PHS" the advantages of technology, operators and manufacturers must be the next point of competition.

Eicon Networks, the global leader in secure Internet access, DIVA server communications card was the first to support the PIAFS standard in Japan in December 2000, making Eicon a provider of the media gateway server that supports this standard. This April, Eicon Networks completed the PIAFS agreement in Qingdao to better adapt to China's network environment, become the world's first support for China's characteristics PIAFS remote access equipment suppliers, for the rapid growth of the PHS market benefits.

Take the switch as the core, to construct the city wireless local telephone system ("PHS"). Laptops, desktops and PDAs are connected via a USB cable to a PHS mobile phone, which is connected to the 32~128kbps core rate and realizes wireless high-speed Internet access via dial-up to the RAS server. Eicon NetWorks Diva Serverpri/4bri as the access device of RAS server, can support the PIAFS1.0, 2.0, 2.1 version, and finally realize the wireless Internet access function of PHS system.

Eicon DIVA Server 4BRI is a 4-port PCI BRI ISDN card that is designed for small and midsize enterprises that want to have an open communications Server, enabling them to implement functionality in data and simulation applications. With its 4 BRI ports, the card ensures that 8 remote users dial the server at the same time. The integrated Data signal processing chip (DSPs) on the DIVA server 4BRI allows one server to support up to 8 concurrent communications, such as ISDN devices, v.90 analog modems, fax machines, and GSM-compliant mobile phone communications. Based on the open system architecture, this kind of active Pc-based interface card can improve the function of the server easily. Enable users to use Third-party software to achieve fax server, integration information, network security, remote access management and other applications.

Based on PHS system in the wireless Internet access has shown great potential, Eicon Networks will be in the domestic Telecommunications Bureau to promote this business.