8 thoughts on “GL865-QUAD: Can’t register in the US with default settings”
Hi,
In my product containing a GL865-QUAD, I leave all the default settings and wait until the modem is attached to the GPRS before doing anything else. I use +CGATT to get the attach status. I use an international sim card, so the modem is always roaming (+CREG:5).
It works fine in many countries but I have a problem in the US.
In the US, the modem cannot register to a GSM network with the default settings, +CREG is always 2 (I have a limited power supply, so I limited the time to 15 minutes).
With all the default settings, I tried +COPS=0 just after reboot. But it does not help.
I tried to select manually the band: #AUTOBND=0 and #BND=3 and the modem managed to register in 40s. I also tried to enable the ENS (#ENS=1). It also registers quickly.
So my questions are: how does #AUTOBND=2 work? why did it fail to register to the network?
The ENS feature seems related to the US and AT&T,. can I enable the ENS everywhere in the world?
Thanks
Hi,
AUTOBND 2 ( default for GL865-QUAD) enables automatic band selection in four bands (at 850/1900 and 900/1800); Setting BND you simply force the module to register on GSM 850MHz + PCS 1900MHz avoiding the search around all the band. ENS can be used also if not in USA.
Hi,
my application send email (online mode) and it works fine in germany. But there must be a problem. If our customers leave germany we cant get any communication from the modul (GC864 Quad V2). I cant deliver emails anymore. Roaming is enabled for the SIM. What must i do to allow Roaming worldwide. Is there anywhere an applications note?
Thanks for your help.
Eric
Does the module register in a network? Is the correct GSM band enabled? Is it at least seeing any network?
I only saw in SIM management from telit (m2mair-E-Portal) the location update in italy for 2 times. Until now, i nothing changed or checked on band or network configuration in the modul. I thoughtthemoduleautomaticallymanagesitself.
For a better understanding i send the following AT code to the modul:
AT+IPR?rn
AT&K0rn
AT+CMEE=1rn
AT+CPIN?rn //=> if PIN is required AT+CPIN=Parameter.PIN
AT+CSQrn
AT#CIMIrn
AT+CGDCONT="1,"IP","Parameter.APN","0.0.0.0",0,0"
AT#SCFG=1,1,0,0,600,50
AT#CPUMODE=2rn
AT#SGACT=1,0,"datalink","MONILOG"rn
AT#SGACT=1,1,"datalink","MONILOG"rn
if status AT#SGACT is activated, continuewith SMTP communication
I saw there is a automatic band selection (#AUTOBND=2). Must it implementated in the AT command procedure or something else?
ProvidedGSMis supported by thenetwork operatorin the target areaand the signal strengthis sufficient andRoamingis active.Whatstill needs tobesetorchecked, so that the modul can work or made connection worldwide?
Thanks for your answer Cosmin.
Eric
I only saw in SIM management from telit (m2mair-E-Portal) the
location update in italy for 2 times (Does the module register in a network?, Is it at least seeing any network? => I think, yes). Until now, i nothing changed or
checked on band or network configuration in the module. I thoughtthemoduleautomaticallymanagesitself.
For a better understanding i send the following AT code to the module:
AT+IPR?rn
AT&K0rn
AT+CMEE=1rn
AT+CPIN?rn //=> if PIN is required AT+CPIN=Parameter.PIN
AT+CSQrn
AT#CIMIrn
AT+CGDCONT="1,"IP","Parameter.APN","0.0.0.0",0,0"
AT#SCFG=1,1,0,0,600,50
AT#CPUMODE=2rn
AT#SGACT=1,0,"datalink","MONILOG"rn
AT#SGACT=1,1,"datalink","MONILOG"rn
if status AT#SGACT is activated, continuewith SMTP communication
I saw there is a automatic band selection (#AUTOBND=2). Must it implementated in the AT command procedure or something else?
ProvidedGSMis supported by thenetwork operatorin the target areaand the signal strengthis sufficient andRoamingis active.Whatstill needs tobesetorchecked, so that the modul can work or made connection worldwide?
Thanks for your answer Cosmin.
Eric
Hi Cosmin,
i found something in AT refernce guide and i changed my Code.
AT+COPS=0 //note from AT#AUTOBND
AT+CREG=1 //display the state of the network registration
AT#ENS=0 //each band in the world should be possible
AT#AUTOBND=2 //automatic band selection activated
How can i check the state of the automatic band search (found or not found, all bands search no band available)? Start the automatic band search from last founded and usable band?
AT+CREG? //check for network registration state, if registered (state=1,5) continue with the my other AT commands
Eric
Registered means of course automatic band selection succeded and module camp in a network. Note if state is 2 you should wait to settle to 1 or 5 before continuing.
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Hi,
In my product containing a GL865-QUAD, I leave all the default settings and wait until the modem is attached to the GPRS before doing anything else. I use +CGATT to get the attach status. I use an international sim card, so the modem is always roaming (+CREG:5).
It works fine in many countries but I have a problem in the US.
In the US, the modem cannot register to a GSM network with the default settings, +CREG is always 2 (I have a limited power supply, so I limited the time to 15 minutes).
With all the default settings, I tried +COPS=0 just after reboot. But it does not help.
I tried to select manually the band: #AUTOBND=0 and #BND=3 and the modem managed to register in 40s. I also tried to enable the ENS (#ENS=1). It also registers quickly.
So my questions are: how does #AUTOBND=2 work? why did it fail to register to the network?
The ENS feature seems related to the US and AT&T,. can I enable the ENS everywhere in the world?
Thanks
Hi,
my application send email (online mode) and it works fine in germany. But there must be a problem. If our customers leave germany we cant get any communication from the modul (GC864 Quad V2). I cant deliver emails anymore. Roaming is enabled for the SIM. What must i do to allow Roaming worldwide. Is there anywhere an applications note?
Thanks for your help.
Eric
Does the module register in a network? Is the correct GSM band enabled? Is it at least seeing any network?
I only saw in SIM management from telit (m2mair-E-Portal) the location update in italy for 2 times. Until now, i nothing changed or checked on band or network configuration in the modul. I thought the module automatically manages itself.
For a better understanding i send the following AT code to the modul:
AT+IPR?rn
AT&K0rn
AT+CMEE=1rn
AT+CPIN?rn //=> if PIN is required AT+CPIN=Parameter.PIN
AT+CSQrn
AT#CIMIrn
AT+CGDCONT="1,"IP","Parameter.APN","0.0.0.0",0,0"
AT#SCFG=1,1,0,0,600,50
AT#CPUMODE=2rn
AT#SGACT=1,0,"datalink","MONILOG"rn
AT#SGACT=1,1,"datalink","MONILOG"rn
if status AT#SGACT is activated, continue with SMTP communication
AT#SD=1,0,Parameter.SMTP_Port,"Parameter.SMTP_Server",0,0rn
HELO
AUTH
…
I saw there is a automatic band selection (#AUTOBND=2). Must it implementated in the AT command procedure or something else?
Provided GSM is supported by the network operator in the target area and the signal strength is sufficient and Roaming is active. What still needs to be set or checked, so that the modul can work or made connection worldwide?
Thanks for your answer Cosmin.
Eric
I only saw in SIM management from telit (m2mair-E-Portal) the
location update in italy for 2 times (Does the module register in a network?, Is it at least seeing any network? => I think, yes). Until now, i nothing changed or
checked on band or network configuration in the module. I thought the module automatically manages itself.
For a better understanding i send the following AT code to the module:
AT+IPR?rn
AT&K0rn
AT+CMEE=1rn
AT+CPIN?rn //=> if PIN is required AT+CPIN=Parameter.PIN
AT+CSQrn
AT#CIMIrn
AT+CGDCONT="1,"IP","Parameter.APN","0.0.0.0",0,0"
AT#SCFG=1,1,0,0,600,50
AT#CPUMODE=2rn
AT#SGACT=1,0,"datalink","MONILOG"rn
AT#SGACT=1,1,"datalink","MONILOG"rn
if status AT#SGACT is activated, continue with SMTP communication
AT#SD=1,0,Parameter.SMTP_Port,"Parameter.SMTP_Server",0,0rn
HELO
AUTH
…
I saw there is a automatic band selection (#AUTOBND=2). Must it implementated in the AT command procedure or something else?
Provided GSM is supported by the network operator in the target area and the signal strength is sufficient and Roaming is active. What still needs to be set or checked, so that the modul can work or made connection worldwide?
Thanks for your answer Cosmin.
Eric
Hi Cosmin,
i found something in AT refernce guide and i changed my Code.
AT+COPS=0 //note from AT#AUTOBND
AT+CREG=1 //display the state of the network registration
AT#ENS=0 //each band in the world should be possible
AT#AUTOBND=2 //automatic band selection activated
How can i check the state of the automatic band search (found or not found, all bands search no band available)? Start the automatic band search from last founded and usable band?
AT+CREG? //check for network registration state, if registered (state=1,5) continue with the my other AT commands
Eric
Registered means of course automatic band selection succeded and module camp in a network. Note if state is 2 you should wait to settle to 1 or 5 before continuing.