GSM/CDMA/3G mobile network optimizing equipment

We are an ISO14000 joint venture with share from IDG of USA.We are the No.1 payphone supplier and leading repeater supplier in China.We have strong R&D team,povide local techinical support and after-sales service per requires of customers.Our products sell to telecommunication operators over 40 countries.We have our own subsidiary in Thailand and joint venture in Indonesia. In network equipment fields,we mainly supply PHS/GSM/CDMA/WCDMA repeater and can handle the whole procedure of project,including site Survey,engineer design,installation,comfiguration,test,system commissioning & training.We are seeking suiable partners to work as our agent. If you are interested in it,pls contact with me.We will be very glad to provide our info of our R&D,marketing etc. The RF Repeater is designed to solve problems of weak mobile signal, which is much cheaper than adding a new base station (BS). Main operation of this repeater is to receive low-power signal from BS via radio frequency (RF) transmission and then transmit the amplified signal to the areas where network coverage is inadequate. And the mobile signal is also amplified and transmitted to the BS via the opposite direction. The Frequency Shift Repeater is designed to solve problems of weak mobile signal, which can expand more coverage than RF repeater and reduce investment for the areas where fiber optic or dedicated cable is not allowed. The system consists of two parts: Donor unit and Remote unit. The Donor unit receives the BS signal via open air RF transmission or direct coupler closed to BS, then coverts it from the working channel to transmission channel that is out of working frequency band, and transmits the amplified signal to the Remote unit that will reconvert the signal to the working channel and provide signal to the areas where network coverage is inadequate. The Fiber Optic Repeater is designed to solve problems of weak mobile signal in the place that is far away from the base station (BS) and has fiber optic cable network underground. The system consists of two parts: Donor unit and Remote unit. The Donor unit captures the BS signal via direct coupler closed to BS, then coverts it into optic signal and transmits the amplified signal to the Remote unit via fiber optic cable. The Remote unit will reconvert the optic signal into RF signal and provide signal to the areas where network coverage is inadequate. The cost-effective Base Station Power Amplifier (BPA) is designed to expand signal coverage through enhancing the downlink transmission power of base station in the area where it is too expensive to build a new base station (BS) or too difficult to choose installation site for a repeater. It is installed close to the BS and amplifies the BS signal via an ultra-linear amplifier unit, then transmits the amplified signal to the Tx antenna input port. A Tower Top Amplifier is usually installed under the Rx antenna as an auxiliary equipment to improve the balance between uplink and downlink. The Tower Top Amplifier (TTA) is designed to expand signal coverage through enhancing the uplink receiving sensitivity in the area where call drops and handoff failures happen frequently. It is installed on the top of telecommunication tower to amplify the mobile signal via a low-noise amplifier before the signal is transmitted to the B