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ManualsBrandsElecrow ManualsCellular / GPRS / GSMElecrow SIM900 GPRS/GSM Shield for Arduino
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SIM900 AT Commands Set
SIM900_ATC_V1.00 197 15.01.2010
Note: If the mobile is NOT attached by AT+CGATT=1 and the CID is NOT activated before
connecting, attaching and activating is automatically done by the AT+CGDATA Command.
Some providers require to use an APN to establish a GPRS connection. So if you use the
Microsoft Windows Dial-Up Network and ATD*9… to connect to GPRS you must provide the
context definition as part of the modem definition (Modem
properties/Connection/Advanced…/Extra settings.) As an alternative, you can define and activate
the context in a terminal program (e.g. Microsoft HyperTerminal) and then use the Dial-Up
Network to send only the ATD Command.
Contact us:
Shanghai SIMCom wireless solutions Ltd.