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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.
5.3 GSM indicator LED
The state of the modem is indicated by the GSM LED located on the rear side of the modem (see chapter
). The table below shows the meaning of the different states of the GSM LED :
GSM LED
LED activity
Modem state
ON
LED on fixed
The modem is powered, it is ready to function but not
yet recognised by the network; the PIN code has not
yet been entered or the antenna is not connected.
LED flashing
(once every 2
seconds)
The modem is powered, the PIN code is active, the
modem is recognised by the network and is ready to
make or receive a call (Idle mode).
LED flashing
(Once a second)
The modem is powered and currently in communication
(Voice, Data or Fax).
OFF
LED off
The modem is not powered or is in the RESET phase.
5.4 AT commands Echo deactivated
If no echo is returned when entering an AT command, it could be that :
- the “Local echo” of your communication application is not activated,
- and/or the modem’s echo function has been deactivated.
The echo is configured by the command
ATE
and requires a back-up with the command
AT&W
.
To activate the modem echo, enter the command
ATE1
.
When using a communication application to send AT commands to the modem, it is recommended to :
- deactivate the "local echo" in your communication application,
- activate the modem echo (enter the command
ATE1
).
For a communication Machine to Machine with the modem, it is recommended to deactivate the modem
echo (enter the command
ATE0
) to avoid the CPU receiving redundant responses.
For more information about the
ATE
command see the Wavecom "AT Commands Interface Guide".
