I have not tried it but you say it works.thomaslauer wrote:My openvpn server is the kylemanna/docker-openvpn
Good.thomaslauer wrote:with windows an ios client i have no problems
Then this is probably the step that goes wrong .. try again but copy the .tar file to windows client and unpack it then see if you get an error like the phone. You could also try this with inline certificates in the config.thomaslauer wrote:when i use the yealink phone i must generate a .tar file with keys an vpn.cnf
Out of curiosity, how do you install openvpn on the phone or is it pre-installed and what openvpn version is it ?