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| In order to propagate PHS signal to enclosed area such as underground shopping area, department store and office premise, PHS Cell Enhancing System is developed. By using this relay system, use of PHS cordless becomes possible in those denied service area. Various types of relay system are available both for PHS common carriers as well as in-premise users. Those relay systems has advantage in cost effectiveness compared with normal basestaion and particularly effective to cell area expansion for low usage area. |
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In-Premise Cell Enhancing Relay System This system converts telephone signal to low frequency and sending thorough ordinary coaxial cable to splitters or dividers, and then convert back to normal PHS signal frequency. This way PHS cordless telephone is usable in denied service area By use of in-promise basestation Call via PSTN network is converted to PHS frequency to achieve cordless office. |
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4ch Dispersed Antenna This is antenna and relay unit of PHS signals for use of common carriers. whole 4ch of PHS signal from a basestation is converted to different frequencies and relayed. The unit is enclosed in waterproof housing and usable in outdoor environment. |
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Frequency Converter Unit F-CON This unit is designed to use as in-premise PHS basestation to enhance propagation area. This unit is consisting with one standard lack with channel units. The channel unit is one channel per unit and multiple channel units are mounted into a standard lack. |
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