https://devzone.nordicsemi.com/f/nordic-q-a/89367/af_lte-and-nproto_at-alternatives-27-06-2022Hi, I have been looking at the sample https://github.com/Rallare/fw-nrfconnect-nrf/tree/nrf9160_samples/samples/nrf9160/simple_at and see that the socket() function uses AF_LTE and NPROTO_AT, but I can&#39;t find any documentation on these identifiers.en-USTelligent Community 13Mon, 27 Jun 2022 07:44:21 GMThttps://devzone.nordicsemi.com/thread/374272?ContentTypeID=1Mon, 27 Jun 2022 07:44:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5b1d6f13-d4e9-4f08-8c63-3962c92e8371Didrik Rokhaug<p>Hi,</p> [quote user=""]the socket() function uses AF_LTE and NPROTO_AT, but I can&#39;t find any documentation on these identifiers. Are they outdated?[/quote] <p>Yes, they are (assuming you are using one of the newest releases).</p> <p>The AT sockets has been removed, and replaced with the AT interface in the modem library: <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/nrfxlib/nrf_modem/doc/at_interface.html">https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/nrfxlib/nrf_modem/doc/at_interface.html</a></p> <p>The documentation itself should be quite good, but you might also want to look at the <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/nrf/samples/nrf9160/at_monitor/README.html">at_monitor sample</a>, which shows how AT notifications can be received in the application using the <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/nrf/libraries/modem/at_monitor.html">AT monitor</a> library.</p> <p>Best regards,</p> <p>Didrik</p><div style="clear:both;"></div>