https://devzone.nordicsemi.com/f/nordic-q-a/77704/serial-lte-modem---unable-to-send-or-receive-tcp-udp-packetsI&#39;m testing the Serial LTE Modem application on the nRF9160DK with the LTE Link Monitor. I want to use the DK as a UDP client to send data to my remote server via UDP over LTE. I can communicate just fine between my PC and server and I can ping theen-USTelligent Community 13Thu, 22 Jul 2021 06:13:03 GMThttps://devzone.nordicsemi.com/thread/321226?ContentTypeID=1Thu, 22 Jul 2021 06:13:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a3c25a49-2401-4b63-91c0-a72d86135e73Mark H<p>Thank you I missed that but it solved my problem!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/321122?ContentTypeID=1Wed, 21 Jul 2021 12:35:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:09aa4744-c04a-47ca-b01e-0e9a316541e4Albrecht Markus Schellenberger<p lang="en-GB">Hello Mark,</p> <p lang="en-GB">My apologies, but the <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/nrf/applications/serial_lte_modem/doc/TCPIP_AT_commands.html#send-data-xsend">documentation</a> is not optimal here.</p> <p lang="en-GB">Could you please try this one instead:</p> <p lang="en-GB"><pre class="ui-code" data-mode="text">2021-07-21T09:17:07.017Z DEBUG modem &gt;&gt; AT#XSEND=1,&quot;Test&quot; 2021-07-21T09:17:07.032Z DEBUG modem &lt;&lt; #XSEND: 4 2021-07-21T09:17:07.033Z DEBUG modem &lt;&lt; OK</pre></p> <p lang="en-GB"></p> <p lang="en-GB">As an alternative for UDP I would recommend you use <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/nrf/applications/serial_lte_modem/doc/TCPIP_AT_commands.html#udp-send-data-xsendto">#XSENDTO</a> or <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/nrf/applications/serial_lte_modem/doc/TCPIP_AT_commands.html#udp-send-data-xudpsend">#XUDPSEND</a>.</p> <p lang="en-GB">I hope this will help you!</p> <p>Regards,</p> <p><span lang="en-GB">Markus</span></p><div style="clear:both;"></div>