Is your sensor using RS232/RS485 or RJ45 interface? I recommend you to use a GPRS TCP/IP Modem(you can call it as DTU too), which is used to do transparent data transmission. Please have a look at this: http://www.yinghuatn.com/a_en/products/DTU_Series/2012/0531/55.html
Shenzhen Yinghua Technology Co.,Ltd
Skype: jim2085 MSN: firstname.lastname@example.org
It would be suitable to use a GPRS gateway to realized the applicaton you need.
you embeded device connect the GPRS gateway with serial port, and the GPRS gateway will transmite the data from the embeded device to the server.
Pls contact my email : email@example.com I can provide more info,
or you could also add my Skype: smilefish-js
The GT-540 Modbus RTU device server can be used to collect data and transmit it back over the cellular network to a remote location for processing. It's being used in many industries including Machine, Transportation, Energy and Agriculture industries. Technical support is free and is provided out of our office in Southern California.
GT-540: $569.00 Cellular Wireless Intelligent GPRS Data Server with 6 Digital Inputs, 2 Digital Outputs and 1 Analog Input. Supports 2G Quad-band 850/900/1800/1900 MHz Frequencies. Provides Wireless Access to Modbus RTU devices. Supports operating temperatures from -25℃ ~ +55℃
ICP DAS USA, Inc.
888-971-9888 ext 105