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CME Error:Operation not allowed | Telit Cinterion IoT Developer Community

September 14, 2015 - 2:24pm, 20032 views


I am using http POST to upload data to a server. The modem used is BGS2-W.

My device is uploading data periodically to the server. Sometimes while setting the content length parameter, I get CME error:3 (Operation not allowed). I retry the upload after 2 minutes. But I keep on getting the same response. The only way to get out of this situation is to reboot the modem using AT+CFUN=1,1. On rebooting, the upload starts normally again.

I checked for the internet connection and service profile, but they seem to be as per what I have set. The AT+CEER command returns no error (all 0s).

The response to AT1 command:




The AT command log:

20150912T180002 INFO Modem:AT^SCKS?

20150912T180002 INFO Modem:^SCKS: 0,1

20150912T180002 INFO Modem:AT+CREG?

20150912T180002 INFO Modem:+CREG: 0,1

20150912T180002 INFO Modem:AT^SISS=0,hcContLen,6229

20150912T180002 INFO Modem:+CME ERROR: 3

What could be the reason for continuous CME errors? What happens on setting the content length. Does the modem allocate some memory and is it not able to allocate memory and hence is failing? Is it possible to query the memory status? 

Thanks and Regards,

Kalyani Kulkarni