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Rev 7.2
June 19, 2013
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9. Communicating with the FX Series
After setting up the FX Series, communications can be established by directly sending AT commands
to the device using terminal software such as HyperTerminal for MS Windows. The following
subsections describe how this is done.
For more information about the AT commands described in the following sub-sections, refer to
documents [1] Open AT Application Framework AT Commands Interface Guide and [2] AirPrime
SL808xT and Q2698 Open AT Framework Commands Interface Guide.
9.1.
Communications Testing
To perform a communications test after the FX Series has been setup using the RS232 serial link
connection, do the following:
Connect the RS232 link between the external application COM port (DTE) and the FX Series
(DCE).
Configure the RS232 port of the DTE as follows:
COM port:
1 (commonly used port for PC serial)
Bits per second:
115200 bps
Data bits:
8
Parity:
None
Stop bits:
1
Flow control:
Hardware
Using a communication software such as HyperTerminal, enter:
AT
When communications have been established, the FX Series will respond with an
“OK”, which
is displayed in the HyperTerminal window.
If communications cannot be established with the FX Series, do the following:
Check the RS232 connection between the application (DTE) and the FX Series (DCE).
Check the configuration of the COM port used on the DTE.
Refer to the table below for other AT commands that can be used after getting the FX Series started.
Table 49.
Basic AT Commands to Use with the FX Series
AT Command
Description
AT+CGMI
To check if the serial link is OK
The FX Series will respond with "Sierra Wireless" when it is OK.*
AT+CPIN=xxxx
To enter a PIN code, xxxx (if activated)
AT+CSQ
To verify the received signal strength
AT+CREG?
To verify the registration of the FX Series on the network
ATD<phone number>;
To initiate a voice call
ATH
To hang up (end of call)
*
When using Firmware version R7.43 or older
, this command will respond with “WAVECOM WIRELESS CPU”
when the serial link is OK.
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