I test my code and have problem with activation GPRS.
My code if receive SMS with special command then try connect to GPRS.
After this send to GMS module :
AT#GPRS? #GPRS: 0 OK
AT#GPRS=1 +CME ERROR: activation failed
On first control if is actived or no . if no then try it.
but failed.
are there any command that I can find the cause?? I reset the connection (AT + CGDCONT , AT # USERID, AT # PASSW ) and the connection still fails
some time before everything worked
what commadn I can test for find problem???
regards
I do not power switch on -> off , only send to gsm #REBOOT, but still don’t work.
I try it again and again , bad don’t work.
I thinks so if GSM module receive SMS , send SMS or is any call ( in or out) then GPRS is disabled. and I must wait some time . I try it.
Is my theory true???
regards
in AT command reference guide is write (page 323) During a call, a SMS sending/receiving or a location update the value of <GPRS>, <PB-ARFCN>, <NOM>, <RAC> and <PAT> parameters don’t make sense.
it’s mean so must wait some time or control <GPRS> , if <GPRS> is 1 then I can ake GPRS connection and use any socket.
Hi, i don’t think the received SMS is disturbing your GPRS connection, as you said, the SMS is already received and analysed by your software.
Instead of using these old at commands (at#gprs, at#userid, at#passwd), try to connect as explained in "Telit_IP_Easy_User__Guide_r10.pdf"
Hi.
I test my code and have problem with activation GPRS.
My code if receive SMS with special command then try connect to GPRS.
After this send to GMS module :
On first control if is actived or no . if no then try it.
but failed.
are there any command that I can find the cause?? I reset the connection (AT + CGDCONT , AT # USERID, AT # PASSW ) and the connection still fails
some time before everything worked
what commadn I can test for find problem???
regards
I do not power switch on -> off , only send to gsm #REBOOT, but still don’t work.
I try it again and again , bad don’t work.
I thinks so if GSM module receive SMS , send SMS or is any call ( in or out) then GPRS is disabled. and I must wait some time .
I try it.
Is my theory true???
regards
in AT command reference guide is write (page 323)
During a call, a SMS sending/receiving or a location update the value of <GPRS>, <PB-ARFCN>, <NOM>, <RAC> and <PAT> parameters don’t make sense.
it’s mean so must wait some time or control <GPRS> , if <GPRS> is 1 then I can ake GPRS connection and use any socket.
Hi, i don’t think the received SMS is disturbing your GPRS connection, as you said, the SMS is already received and analysed by your software.
Instead of using these old at commands (at#gprs, at#userid, at#passwd), try to connect as explained in "Telit_IP_Easy_User__Guide_r10.pdf"
AT+CGDCONT = 1,"IP","apn.address.com","0.0.0.0",0,0<cr> (GPRS context setting)
AT#SCFG=1,1,300,90,600,50<cr>
OK
AT#SGACT=1,1,“user“,“password“<cr>
#SGACT: 193.199.234.255
OK
If it doesn’t work, check if GPRS is attached with command AT+CGATT? If it’s not attached , attach it manually with AT+CGATT=1
if GPRS is attached and APN parameters are correct it must connect…
yes but if gsm module receive sms or is any call then GPRS is detach.
and I can’t attach GPRS while <GPRS> in #SERVINFO is 0, if change to 1 then can attach.
of course if GPRS is 1 and receive SMS or is any call then …
I must make some test , for this ..