<div dir="ltr"><div><div><div><div>Hello group<br><br>we have a problem with our phones that started this afternoon. If a phone restarts for any reason (reset oder network unplugged) it shows a TLS Error (TLS Error: [CUCM IP]).<br>
</div>We can fix the problem, when we go to the device in the CUCM Administration and choose Install/Upgrade in the CAPF Information section.<br>After resetting the Device the IPPhone starts and updates the certificate. <br>
</div><br>What could cause such a behaviour and how could we fix it?<br><br></div>We have a CUCM 7.1(3a) and have the phones authenticated.<br><br></div>Thanks Reto<br></div>