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CSD Data Transmission

Circuit Switch Data (CSD) is the data communication standard on the GSM network. It also calls Data line or Fax line communication services over GSM network. CSD is using on the equipment data and M2M communication over the wireless network.

One of the Radio Broadcast Company in Hong Kong has many Antenna stations around Hong Kong. We provide our GSM modems for them to do the M2M communications. The location of the antenna stations of the radio broadcast company is rare and it does not have any fixed network coverage. The radio broadcast company need to collect the data and control the hardware equipment remotely. Our GSM modem FM-35i is the best solution for them. FM35i can perform the auto receiving call and CSD communication. The Radio Broadcast company open the CSD data line communication SIM with the mobile operators and they can remote control and collect the data from the Antenna stations in the rural area.


1.      Save the cost for setting up the expensive lease line circuit

2.      High security for remote control (Only define MSISDN can be get connected.

3.      Easy to setup

4.      Low cost of ownership


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