Genesys Cloud - Main

I need to download two CA certificates to polycom phones. I added the certificates using the admin -> Digital and Telephony -> Telephony -> Certificate Authorities. This means there are now 3 in the list which includes the PureCloud CA certificate. When I reboot the phone, the "Installed custom root CA certificate" list under SSL Certificates on the phone's UI only shows the first two: the PureCloud CA certificate and one of the CA certs I added.  When the phone tries to connect using TLS to the server I installed, it fails due to unknown CA. How do I configure it to send all 3 CA certificates? Is two the limit? The phone in question is a Polycom VVX 350 running UCD Software Version 6.4.7.4513. 

Thanks for any help. 

Hello Andrew,

I can only make a few recommendation. I would first recommend that you try removing all of the certificates and then re-adding them one by one. You may want to run the latest firmware for the VVX 350, which according to Polycom's Software Matrix, shows that 6.4.6 is the latest firmware for the phone.