View source for AT Command for 3G Module

*Brand Name
 #atcommand -v /dev/ttyUSB2 -cmd AT+CGMI
 CMD:AT+CGMI
 Sierra Wireless, Incorporated
*Model Name
 #atcommand -v /dev/ttyUSB2 -cmd AT+CGMM
 CMD:AT+CGMM
 MC7354
*FW Info
 #atcommand -v /dev/ttyUSB2 -cmd AT+CGMR
 CMD:AT+CGMR
 SWI9X15C_05.05.16.03 r22385 carmd-fwbuild1 2014/06/04 15:01:26
*Serial Number
 #atcommand -v /dev/ttyUSB2 -cmd AT+CGSN
 CMD:AT+CGSN
 359225051496289
*MI
 #atcommand -v /dev/ttyUSB2 -cmd AT+CIMI
 CMD:AT+CIMI
 466014120016052
*CQ
 #atcommand -v /dev/ttyUSB2 -cmd AT+CSQ
 CMD:AT+CSQ
 +CSQ:99,99

*'''Open minicom''' 
#AT+CPIN? // Check PIN status, not necessary
#AT+CGDCONT? // query PDP context parameter, not necessary
#AT+CGDCONT=1,"IP","internet"        //set PDP context parameter 
#AT!GSTATUS?              //query operational status
#AT!SCACT=1,1     //activate data connection. AT!SCACT=<state>,<pid>. state=1/0 means act/deactivate; pid=1 (UMTS: all network except Verizon) 
#AT+CGPADDR             //show PDP addres
#AT!SCACT=0,1             //de-activate data connection, only issue when needed

*'''Open Terminal to check network status'''
#ifconfig wwwan0 up // bring wwan0 up
#dhclient wwan0     // enable DHCP protocol and assign IP address for wwan0
#dhclient -r wwan0 // disconnect by release current assigned IP address, only issue when needed