Is there a user guide for the nRF9160 modem?

Question

Hi there, 
 I've just installed the "thingy91_at_client_2021-03-04_8e8c6089.hex" AT command client app on my Thingy:91 and I've connected to it via the nRF Connect LTE Link Monitor. 
 I'm now looking for some sort of user guide that takes me through the steps I need to go through, including turning it on, sending UDP packets etc. 
 Does such a guide exist? I've found the AT command reference, but no user guide. I'm unsure how to piece the AT commands together. 
 So far, I've managed to switch the modem on via AT+CFUN, and I can see the signal strength, the available network carriers, and more, so the modem looks healthy. I've also registered the SIM via the Nordic cloud app so I'm thinking I should be good to go. My goal is to send a UDP packet e.g. a DNS request: 
 AT#XSENDTO="8.8.8.8",53,1, "\xAA\xAA\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x07\x65\x78\x61\x6d\x70\x6c\x65\x03\x63\x6f\x6d\x00\x00\x01\x00\x01" 
 ...but I get some mysterious "+CME ERROR: 0". 
 In summary, a link to some user guide for the modem would be great. Thanks for any help. 
 Kind regards, Christopher

Øyvind · Accepted Answer

Hi Christopher, The AT client sends AT commands that are documented in AT Command reference guide . Working with Thingy:91 is a good starting point, then look at our samples for nRF9160 and the applications to demo the functionality, i.e. Asset Tracker . 
 Kind regards, Øyvind

Øyvind · Answer

Christopher, my apologies I misread the AT command you were referring to. 
 AT#XSENDTO="8.8.8.8",53,1, "\xAA\xAA\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x07\x65\x78\x61\x6d\x70\x6c\x65\x03\x63\x6f\x6d\x00\x00\x01\x00\x01" 
 This is part of the Serial LTE Modem application , which has its own AT commands. These do not work in the AT Client. See #XSENDTO chapter for more information. 
 Kind regards, Øyvind

Is there a user guide for the nRF9160 modem?

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