Sierra Wireless AirLink GL8200, User Manual

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4116298 Rev 7.0 November 07, 2016 34
Product Technical Specification and
User Guide
Troubleshooting the GL8200
If the GL8200
returns
Then ask Action
"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
If the GL8200 returns a
"NO CARRIER"
message, you may retrieve the extended error code by using
the AT command
AT+CEER
. Refer to the table below for the interpretation of extended error codes.
Table 18. Extended Error Codes
Error Code Diagnosis Hint
1 Unallocated phone number
16 Normal call clearing
17 User busy
18 No user responding
19 User alerting, no answer
21 Call rejected
22 Number changed
31 Normal, unspecified
50 Requested facility not subscribed
Check your subscription. (Is data subscription
available?)
68 ACM equal or greater than ACMmax The credit of your pre-paid SIM card has expired.
252 Call barring on outgoing calls
253 Call barring on incoming calls
3, 6, 8, 29, 34,
38, 41, 42, 43,
44, 47, 49, 57,
58, 63, 65, 69,
70, 79, 254
Network causes
For more information about AT commands applicable
to the GL8200, please refer to the commands marked
as supported by HL8548x in document [2] AirPrime
HL6 and HL8 Series AT Commands Interface Guide
or call your network provider.
For all other codes and their corresponding details applicable to the GL8200, refer to the commands
marked as supported by the HL8548x in document [2] AirPrime HL6 and HL8 Series AT Commands
Interface Guide
.
5.4. Resetting the GL8200
Resetting the GL8200 could be triggered by the AT command
AT+CFUN=1,1
, or it could be done by
simply unplugging and then re-plugging the power supply (VIN-VBUS).