41110590
Rev 6.1
January 28, 2019
40
Product Technical Specification and
User Guide
Troubleshooting the GL7x00
Table 25.
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 GL7500, please refer to document [3] AirPrime
HL7588 AT Commands Interface Guide; for more
information about AT commands applicable to the
GL7600, refer to the commands marked as supported
by HL7692 in document [4] AirPrime HL76xx AT
Commands Interface Guide.
For all other codes and their corresponding details applicable to the GL7500, please refer to
document [3] AirPrime HL7588 AT Commands Interface Guide; for other codes and their
corresponding details applicable to the GL7500, refer to the commands marked as supported by
HL7692 in document [4] AirPrime HL76xx AT Commands Interface Guide
6.5.
Resetting the GL7x00
Resetting the GL7x00 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 (DCIN).
In addition to Sierra Wireless’ reliable recovery mechanisms, it is highly recommended that the ability
for a power cycle to reboot the modem be included in the design in case the modem becomes
blocked and stops responding to reset commands.
Last Gasp should be disabled before performing a hardware reset on the GL7600 to prevent the
modem from sending emergency messages while the modem's main power supply is unplugged.
