#XCARRIEREVT: 10,0

[Bryan Mills]

We are using the nrf9160 with SLM V2.4.2 and Modem V1.3.6 and we can do 6 calls to the Verizon cell network in 3 minutes and 30 seconds apart with no issues.

However, on the 7th call (26 minutes after the first call) we get this message unsolicited message coming out of the nrf9160 after which time the nrf9160 must be factory reset for it to work again. What is causing this problem?

#XCARRIEREVT: 10,0

%XSIM: 1

%CESQ: 73,3,13,1

+CEREG: 2,"3D01","00EFBA02",7
Sent: AT%XDATAPRFL=0

OK

%MDMEV: RESET LOOP

[dejans]

Hi,

Modem might have entered the reset loop. You can read more about this in the documentation - modem reset loop restriction and activation of reset loop restriction.
Is the behavior that you see consistent with what is described in the documentation?

Best regards,
Dejan

[Bryan Mills]

Yes it has entered the reset loop which we have seen before and I do have an automatic way to get out of that, my question was why is that happening?
Since I posted this, I have change the way I end the call by issuing a CFUN=0 to shut off the radio instead of the CFUN=4 that I was doing when I posted this issue, then I wait 3 second and then issuing a XSLEEP=1 to put the rest of the nrf9160 to sleep to get the lowest power. I am no longer getting the XCARRIEREVT: 10,0 and I am no longer getting into the reset loop. However, almost every time I get a XCARRIEREVT 6,0 now and I see that occasionally, the nrf9160 is drawing excessive current (~1.9 mA) after it is supposed to have shut down. I have included a picture from the PPK2 to show current draw. I also have the PPK file but it is over 21MB and I don't know if this will be blocked if I attach it.