https://devzone.nordicsemi.com/f/nordic-q-a/119688/nrf9160-cmw500Hi, I am trying to connect nrf9160 to CMW500 callbox however I am not able to connect to it. Switching to a commercial sim card I was able to connect to the network. I am using the following AT commands to start and check the network connection: 1en-USTelligent Community 13Mon, 10 Mar 2025 20:42:36 GMThttps://devzone.nordicsemi.com/thread/526644?ContentTypeID=1Mon, 10 Mar 2025 20:42:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ab150d58-5161-4fd4-87c4-a469ddebbfb4nordicuser91<p>Thanks&nbsp;<span>SoTXhelp for the quick reply. I really appreciate it. I&#39;ll check on again and get back to you on this.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/526639?ContentTypeID=1Mon, 10 Mar 2025 19:18:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2ca14eba-e9e4-46c4-8626-cc46c63334c5SoTXhelp<p>Hello Purvesh,</p> <p>We have a blog to assist in connecting the nRF91xx to a CMW500.&nbsp;</p> <p>Make sure that you have a CMW500 SIM.&nbsp;</p> <p>The DFL files are in the blog instructions.&nbsp;</p> <p>You can find the blog here.&nbsp;<a title="CMW500 Callbox configuration" href="https://devzone.nordicsemi.com/guides/hardware-design-test-and-measuring/b/nrf9x/posts/using-nrf9160-against-r-s-cmw500-or-cmw290-in-signalling-callbox-mode">using-nrf9160-against-r-s-cmw500-or-cmw290-in-signalling-callbox-mode</a></p> <p>This document also has some screenshots on configuring the CMW500.&nbsp;</p> <p><a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/0363.CMW500_5F00_Test_5F00_Setup_5F00_Instructions_5F00_v1.0.0.pdf">CMW500_Test_Setup_Instructions_v1.0.0.pdf</a></p> <ol> <li>AT client FW running on the device.</li> <li>XSYSTEMODE setting. My test setup was for LTE-M1, but initially my config had NB-IOT only and not enable LTE-M, so i didn&#39;t get the attach.&nbsp; See link to docs.nordicsemi.com below</li> </ol> <p><a href="https://docs.nordicsemi.com/bundle/ref_at_commands/page/REF/at_commands/mob_termination_ctrl_status/xsystemmode_set.html">https://docs.nordicsemi.com/bundle/ref_at_commands/page/REF/at_commands/mob_termination_ctrl_status/xsystemmode_set.html</a></p> <table width="600"> <tbody> <tr> <td></td> <td width="288"> <p><a href="https://docs.nordicsemi.com/bundle/ref_at_commands/page/REF/at_commands/mob_termination_ctrl_status/xsystemmode_set.html">Technical Documentation</a></p> <p>docs.nordicsemi.com</p> </td> </tr> </tbody> </table> <p></p> <ol> <li>eMTC Auto Mode to RMC setting shown in the pdf attached was also incorrectly set on my CMW and that from eMTC Auto Mode to RMC&nbsp;setting made a difference.</li> <li>I also set up to start with band 1 for my test and didn&#39;t try starting with any other band setting.</li> </ol> <p>Regards,</p> <p>Don</p><div style="clear:both;"></div>