Hi Ram, Please do not top-post on this mailing list. On 03/06/2015 02:28 AM, Kallumari Nagaraja Rao, RammohanX wrote: > Denis, > > PFA the logs with AT&C0 & without. With &C0 it is not even creating a context. > I have just tried my HE910 with unmodified oFono 1.16 and I am able to successfully activate the context. My firmware version is 12.00.003, but 12.00.004 is recommended. What you should be seeing is something like this: ofonod[19130]: drivers/atmodem/gprs-context.c:at_gprs_activate_primary() cid 1 ofonod[19130]: Modem: > AT+CGDCONT=1,"IP",""\r ofonod[19130]: Modem: < AT+CGDCONT=1,"IP",""\r ofonod[19130]: Modem: < \r\nOK\r\n ofonod[19130]: drivers/atmodem/gprs-context.c:at_cgdcont_cb() ok 1 ofonod[19130]: Modem: > AT+CGDATA="PPP",1\r ofonod[19130]: Modem: < AT+CGDATA="PPP",1\r ofonod[19130]: Modem: < \r\nCONNECT\r\n ofonod[19130]: drivers/atmodem/gprs-context.c:at_cgdata_cb() ok 1 ofonod[19130]: drivers/atmodem/gprs-context.c:setup_ppp() ofonod[19130]: drivers/atmodem/gprs-context.c:ppp_connect() What you are seeing is this: ofonod[6586]: drivers/atmodem/gprs-context.c:at_gprs_activate_primary() cid 1 ofonod[6586]: Aux: < \r\n ofonod[6586]: Aux: < +CIEV: rssi,5\r\n ofonod[6586]: src/network.c:ofono_netreg_strength_notify() strength 100 ofonod[6586]: Aux: < \r\n ofonod[6586]: Aux: < +CIEV: rssi,4\r\n ofonod[6586]: src/network.c:ofono_netreg_strength_notify() strength 80 ofonod[6586]: Terminating That tells me that the port detected as the 'Modem' port is incorrect. ofonod[6586]: plugins/udevng.c:setup_he910() modem=/dev/ttyACM0 aux=/dev/ttyACM3 gps=/dev/ttyACM5 Please check that those TTYs are indeed live and can accept AT commands. If not, then you need to update firmware, set the appropriate PORTSEL setting or update plugins/udevng.c logic for detecting your particular variant of HE910. Regards, -Denis