User guide

WA_DEV_GL6100_PTS_001 Rev 002 May 24, 2010 59
GL61x0 Product Technical
Specification and User Guide
Troubleshooting the GL61x0
Enable the verbose error report method to see the error codes associated with the command syntax.
 Enter the AT+CMEE=1 command in order to change the error report method to the verbose
method, which includes the error codes.
 Re-enter the AT command which previously caused the reception of an “ERROR” message in
order to get the Mobile Equipment error code.
When the verbose error report method is enabled, the response of the GL61x0 in case of error is
either:
 +CME ERROR: <error result code>
or
 +CMS ERROR: <error result code>
Refer to document [7] Firmware 7.42 AT Commands Manual (Sierra Wireless Software Suite 2.32) for
more information on the error result code description and further details on the AT +CMEE command.
Note: It is strongly recommended to always enable the verbose error report method to get the Mobile
Equipment error code (enter the AT +CMEE=1 command).
11.4. Receiving “NO CARRRIER”
If the GL61x0 returns a “NO CARRIER” message upon an attempted call (voice or data), refer to the
following table for possible causes and their corresponding solutions.
Table 42: Receiving a “NO CARRIER” Message
If the GL61x0
returns
Then ask
Action
“NO CARRIER”
Is the received signal strong enough?
Refer to section 8.2 Verifying the Received
Signal Strength for more information on how
to verify the strength of the received signal.
Is the GL61x0 registered on the
network?
Refer to section 8.3 Verifying the Network
Registration for more information on how to
verify the network registration.
Is the antenna properly connected?
Refer to section 6.2.2.2 Antenna
Specifications for more information on the
antenna requirements of the GL61x0.
Is the band selection correct?
Refer to section 8.5 Switching Bands for
more information on how to switch bands.
“NO CARRIER” (when
trying to issue a voice
communication)
Is the semicolon (;) entered immediately
after the phone number in the AT
command?
Ensure that the semicolon (;) is entered
immediately after the phone number in the
AT command.
e.g. ATD######;
“NO CARRIER” (when
trying to issue a data
communication)
Is the SIM card configured for data/fax
calls?
Configure the SIM card for data/fax calls.
(Ask your network provider if necessary).
Is the selected bearer type supported by
the called party?
Ensure that the selected bearer type is
supported by the called party.
Is the selected bearer type supported by
the network?
Ensure that the selected bearer type is
supported by the network.
If still unsuccessful, try selecting the bearer
type using the AT command:
AT+CBST=0,0,3