EG_GenPro2xe_1003_UG_005_UK
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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.
Dct_427_00
6.3 "NO CARRIER" message
If the modem returns the message "NO CARRIER" after an attempted call (voice or data), check the table
below to see the possible causes and the solutions.
Table: Solutions when a message "NO CARRIER” is returned
If the modem...
Check :
Action
"NO CARRIER"
Is the received GSM signal strong
enough?
See the paragraph 5.5 to check the quality of the
received signal
Is the modem registered on the
network?
See the paragraph 5.7 to check its registration.
Is the antenna correctly
connected?
See the paragraph 8.2.6.3 for the
recommendations about the GSM antenna
installation.
"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 (
;
) has 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?
Ensure that the SIM card is allowed to make data
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 more information about this AT command, see the document "EG_EGM_CL_xxx_yy" of ERCO &
GENER.
If the modem returns the message "NO CARRIER", you can get the extended error code with the command
AT+CEER
.
For more information about the error codes returned after having sent the command
AT+CEER
, see the
document "EG_EGM_CL_xxx_yy" of ERCO & GENER.
