EG_GenPro78e_1003_UG_007_UK
Page 26 / 41
Description and non-contractual illustrations in this document are given as an indication only.
ERCO & GENER reserves the right to make any modifications.
-
Enter the command
AT+CMEE=1
to obtain an error message with its error code instead of a
simple “ERROR” message,
-
Enter again the AT command which previously caused a problem to obtain the error code. In
the case of an error, the response is in the form :
+CME ERROR : <error code>
For further information about the error codes returned by the command
AT+CMEE
, refer to the ERCO &
GENER "Commands List".
Note : It is strongly recommended to systematically allow the modem to return error codes (enter the
command
AT+CMEE=1
).
6.3 "NO CARRIER" message
If the modem returns the message "NO CARRIER" after an attempted call (voice or data), check the table
below for a list of possible causes and solutions.
Table : Causes and solutions when the "NO CARRIER " message is returned
Modem returns...
Check
Action
"NO CARRIER"
Is the received GSM signal strong
enough?
Verify the received signal quality (see chapter
5.5 Verifying GSM receive signal quality
).
Is the modem registered on the
network?
Verify network registration (see chapter
5.7
Verifying modem registration on the GSM
network
).
Is the antenna correctly
connected?
Check the GSM antenna installation (see chapter
8.2.6.3 External GSM Antenna
for installation
recommendations).
"NO CARRIER"
(when attempting a
VOICE call)
Has the semi-colon (
;
) been
entered immediately after the
telephone number in the AT
command?
Ensure that the semi-colon (
;
) been entered
immediately after the telephone number in the
AT command, for example : ATD0123456789
;
"NO CARRIER"
(when attempting a
DATA call)
Has the SIM card been configured
for data / fax calls?
Ensure that the SIM card is allowed to make data
/ fax calls (check with your SIM card supplier).
Is the selected modulation type
supported by the called number?
Ensure that the selected modulation type is
supported by the called number.
Is the selected modulation type
supported by the network?
Ensure that the selected modulation type is
supported by the network. If not, select a
compatible modulation type with the command
AT+CBST=0,0,1
(1*).
(1*) For further information concerning this command see the ERCO&GENER "Commands List”.
If the modem returns the message "NO CARRIER", use the command
AT+CEER
to see the extended error
code.
For further information about the error codes returned by the command
AT+CEER
, refer to the ERCO &
GENER "Commands List".
