User guide

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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCO&GENER reserves the right to make any modifications.
5.2 GSM LED
The status of the modem is indicated by the status of the GSM LED located on the rear side of the modem. It
is the LED situated next to the SIM reader (see paragraph 3.1).
The table hereunder shows the meaning of the different available status of the GSM LED.
5.3 Echo Function of AT commands deactivated
If no echo is returned when entering an AT command, it means that:
- the "local echo " of your communication software (like Hyperterminal) is not activated,
- the echo function of the modem has been deactivated.
The echo function can be configured with the command ATE. It requires a back-up with the command
AT&W.
To activate the echo function of the modem, enter the command ATE1.
When sending AT commands to the modem using a communication software, it is recommended to:
- Deactivate the "local echo" parameter in your communication software (like Hyperterminal),
- Activate the echo function of the modem (the command ATE1).
For a Machine to Machine communication with the modem, it is recommended to deactivate the echo
function of the modem (the command ATE0) in order to avoid the CPU receiving redundant responses.
For more information about the ATE commands, see the "Commands List" document of ERCO & GENER.
GSM LED status LED Activity Modem status
On LED on fixed The modem is powered on. To be ready to work and
recognized by the network the PIN code has to be
entered and the antenna connected.
Flashing LED flashing
(every 2 seconds)
The modem is powered on, the PIN code is active, and
the modem is recognized by the network and in
communication (to make or receive calls).
Off LED off The modem is not powered on or in RESET phase.