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I can’t connect my Snom 717D phone to OpenVPN. 

The latest firmware for the phone from the official site is installed, a patch for VPN is installed. An OpenVPN server has been created, tested for operability, including with settings that are downloaded to the phone. Any client works with these settings except the phone. What information must be provided in order to receive assistance? Please check the information on the SNOM website that the phone supports the following types of encryption:

DHE-RSA-AES256-SHA

DHE-DSS-AES256-SHA

AES256-SHA

EDH-RSA-DES-CBC3-SHA

EDH-DSS-DES-CBC3-SHA

DES-CBC3-SHA

DHE-RSA-AES128-SHA

DHE-DSS-AES128-SHA

AES128-SHA

RC4-SHA

RC4-MD5

EDH-RSA-DES-CBC-SHA

EDH-DSS-DES-CBC-SHA

DES-CBC-SHA

EXP-EDH-RSA-DES-CBC-SHA

EXP-EDH-DSS-DES-CBC-SHA

EXP-DES-CBC-SHA

EXP-RC2-CBC-MD5

EXP-RC4-MD5

The OpenVPN server only supports:

DES-CBC

RC2-CBC

DES-EDE-CBC

DES-EDE3-CBC

DESX-CBC

Bf-cbc

RC2-40-CBC

CAST5-CBC

RC2-64-CBC

AES-128-CBC

AES-192-CBC

AES-256-CBC

How should a snom work with OpenVPN, on what type of encryption?

vpn.сnf configuration :

client

dev tun

proto udp

remote 109.106.194.4 1194

resolv-retry infinite

nobind

; user nobody

; group nobody

persist-key

persist-tun

ca /openvpn/ca.crt

cert /openvpn/client.crt

key /openvpn/client.key

AES-256-SHA

remote-cert-tls server

verb 3

ping 10

ping-restart 60