Connect Windows PC to Yeastar S-Series VoIP PBX via OpenVPN

Before connecting your Windows PC to Yeastar S-Series VoIP PBX, you need to download and install OpenVPN on your Window PC.

The OpenVPN GUI appears on the desktop of the PC, and you can use the OpenVPN GUI to connect to the Yeastar S-Series VoIP PBX later.

  1. Copy the following files to config folder (e.g. D:\OpenVPN\config).

    Table 1. Files for Windows client
    File Note
    ca.crt Root Certificate Authority
    Windows.crt a certificate file for Windows client
    Windows.key a key file for Windows client
    Windows.ovpn an OpenVPN connection file
    passfile Required for OpenVPN username/password authentication
    ta.key Required for client when SSL/TLS is enabled on the OpenVPN server
  2. Connect to the OpenVPN server.
    1. Right click the OpenVPN GUI on the desktop, and run as administrator.
    2. Find the OpenVPN GUI in the bottom right corner, right click the icon, and click Connect.

    3. If the client is connected to the PBX server, you will see the status shows as below.

Troubleshooting: If you are prompted "The local and remote VPN endpoints must exist within the same 255.255.255.252 subnet.", you should allocate a static IP address for Windows client if using TUN device mode.