https://devzone.nordicsemi.com/f/nordic-q-a/50659/issue-with-nrf9160-modem-connecting-to-rohde-schwarz-cmw500Hi, We are currently in development of an IoT solution using the nRF9160. We are doing a set of EMC tests to ensure electromagnetic compatibility of the device. The test house we are working with uses a Rohde &amp; Schwarz CMW500 call box to simulateen-USTelligent Community 13Tue, 06 Aug 2019 18:42:00 GMThttps://devzone.nordicsemi.com/thread/202689?ContentTypeID=1Tue, 06 Aug 2019 18:42:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:33b9dd64-5844-4b2f-9992-7d9ac5abbb63Jack Panetta<p>Thanks for the detailed response.</p> <p>It ended up being an issue with Call Box&#39;s configuration.</p> <p>- Jack</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/202653?ContentTypeID=1Tue, 06 Aug 2019 13:31:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cde8d3ef-9eee-4c9e-820a-cd4c012013ebTimo Vayrynen<p>Hi, CMW500 should accept basically any test UICC card if the security settings are correct. For R&amp;S CMW500 we are using R&amp;S CMW-Z05 test UICC, which should connect to CMW500 without any additional configuration needed. So are you getting an attach reject or is the nRF9160 already failing when doing a cell search? eMTC Auto Mode with proper operating band should work &quot;out-off-the-box&quot;. You could also check the signaling with CMWMars, but I assume that these checks have already being done by the test house and you are using proper SIM card.</p><div style="clear:both;"></div>