Discussion in "Embedded GSM Development" started by    mohsin418    May 6, 2014.
Thu May 15 2014, 10:24 am
#21
You cannot use ATD on modem as you do not have a PPP handler in your controller. You have to use TCP commands of modem which internally handles all the response.
Thu May 15 2014, 10:55 am
#22
what should i do now, big time trouble it is,its not connecting by the TCP commands
Sat May 17 2014, 04:19 pm
#23
You are sending wrong cgreg command format. It should be
At+cgreg?

Use the same format for creg also. I see that you are getting no carrier with ATD. I am thinking your modem is not registered on network.
Sun May 18 2014, 03:26 pm
#24
at+cgreg? (1,1)
at+creg? (0,2)
same result

calling and text messages are successful , now how to register modem to a network?


[ Edited Sun May 18 2014, 03:27 pm ]
Tue May 20 2014, 05:32 pm
#25
at+CREG should give response starting with
+CREG: 0,1
or
+CREG: 0,5

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