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GSM Module
Contents
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Returned Format of AT Commands
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ATQ: set whether or not to display the returned value.
+++: switch from data mode to command mode
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ATO: switch from command mode to data mode
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+CLIP: Calling Line Identification Presentation
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+CIMI: International Mobile Identification
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+ZVERS: get current software version
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+CCFC: call forwarding number and conditions
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*TSIMINS: check SIM card status
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+CGMI: inquire manufacturer’s information
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+CSCS: character set selection
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