https://devzone.nordicsemi.com/f/nordic-q-a/91754/nrf9160-won-t-connect-to-anritsu-mt8821cHi, I have an nRF9160 device which is going thru PTCRB cert. We are doing TRP/TIS and nRF9160 won&#39;t connect to the Anritsu MT8821C. Basically it tries to connect and just drops the call. The strange thing is that this device connected on 2 differenten-USTelligent Community 13Fri, 09 Sep 2022 09:02:37 GMThttps://devzone.nordicsemi.com/thread/385458?ContentTypeID=1Fri, 09 Sep 2022 09:02:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0566eddb-5ea5-4cc7-a03a-4d00575e7dfeJONATHAN LL<p>Thanks for updating&nbsp;us.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/385414?ContentTypeID=1Fri, 09 Sep 2022 03:15:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:71180602-dcd4-49a5-919e-4f9d1677b320chahn-ds<p>We were able to fix it.&nbsp; Turns out the test&nbsp;house updated the Anritsu box in the past few weeks with new firmware.&nbsp; When they downgraded the firmware on the Anritsu box, our nRF9160 device was able to connect.&nbsp; This issue can be closed.&nbsp; Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/385250?ContentTypeID=1Thu, 08 Sep 2022 11:47:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5eb4e2da-30c2-4076-a019-a3b752adfd78JONATHAN LL<p>Hi,<br /><br />Is there any error or logs that you can provide from when the call is dropped?&nbsp;<br /><br />What the settings on the Anritsu?<br /><br />Are you also in contact with Anritsu regarding the issue, most&nbsp;likely a configuration issue. Could it be a security mode reject for the security mode command?<br /><br />Regards,<br />Jonathan</p><div style="clear:both;"></div>