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GSM/3G User Manual
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Figure 3-21 Function Options
Table3-5
Description of
Definition of Functions
Options Definition
Check Number

Enter a known number (like your mobile phone) to check what
number it is of the SIM card. Click "Execute", then the gateway
will dial to the number you already input. It only rings for one time
and hangs up at once. Not generating telephone charge during
this procedure.
Get USSD Enter a specific USSD number (For example,*142# to check your
SIM card's balance. This USSD number is might be different from
different carriers) to get the USSD information. The gateway will
try to get by AT commands.
AT Command To perform some specific AT commands. This is useful when you
have a debug of the GSM modem. e.g. perform [ AT+CSQ ] to
check what signal qualify it is. In AT commands, there is no
difference between “a” and “A”
If you want to send AT command, first you should input your command, then select
certain ports and choose “
Copy to Selected
”, finally choose “
Execute
”.