Yealink T21P E2 - Raspberry OpenVPN

[Kostas]

Hello,

I would like to ask if it is possible to set up a Yealink T21P device on a raspberry server, that I've already set, via OpenVPN.

After reading the Yealink manual, I found out that the server configuration that the manual provides me with is completely different than the one that my server has. Furthermore the client configuration that the server creates also is completely different from the sample provided in the manual.

I have already set up the PiVPN (Raspberry's customized VPN - http://www.pivpn.io ) that up until now works flawlessly on softphones (Zoiper, etc). Can I use the VPN or can I use any other VPN in general?
If not what am I to do in order for it to work?