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Experiments on GSM/GPRS/HSDPA modem

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Modeswitch and init commands for ZTE MF626 Edit

AT+ZOPRT=5 (TODO: is this really required?)
ATZ+CPIN=<PIN>
AT+ZCDRUN=8
AT+ZCDRUN=9 (to bring back the ISO file system)

I can't get usb_modeswitch to work; however, eject /dev/sr1 does the trick.

Port Settings Edit

Speed: 115200
Data bits: 8
Parity: None
Stop bits: 1
Flow Control: None

Notes Edit

Once the modem has been initialized, it will start sending a stream of +ZUSIMR:2 messages. It means that it doesn't know where to store the messages. To solve this, issue the following commands to store it at the SIM card:

AT+CPBS="SM"
AT+CPMS="SM","SM","SM"


Sending SMS Edit

AT
OK
AT+CMGF=1
OK
AT+CMGW="+639191234567"
> Hello world!
+CMGW: 1

OK
AT+CMSS=1
+CMSS: 20

OK

Scanning for Available Networks Edit

AT+COPS=?
+COPS: (1,"Smart Communications Inc.","SMART","51503",0),(2,"","","51503",2),(3,"Digital Telecommunications Phils,Inc","PH DIGITEL","51505",0),(3,"","","51502",2),(3,"Globe Telecom,GMCR Inc.","GLOBE","51502",0),

OK

TODO Edit

  • How to monitor signal strength?
    • AT+CSQ
  • How to read/write phonebook entries?
    • AT+CPBS
  • How to read/write/delete SMS messages from SIM card?
    • AT+CMGR, AT+CMGL, AT+CMGD
  • How to determine the SIM card's available storage space?
    • AT+CPMS

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