Connect Android Phone to Yeastar S-Series VoIP PBX via OpenVPN

OpenVPN for Android is an open source client compatible with all versions of Android 4.x or later. Before connecting your Android phone to Yeastar S-Series VoIP PBX, you need to install the OpenVPN on your phone.

Note: Make sure that the TUN device mode is used on VPN server.
  1. Put the following files to your Android phone.
    Table 1. Files for Android client
    File Note
    ca.crt Root Certificate Authority
    Android.crt a certificate file for Android client
    Android.key a key file for Android client
    Android.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. Open the OpenVPN app on your Android phone.
  3. Tap the icon and navigate to the folder location where you copied the files.
  4. Tap the OpenVPN connection file end with .ovpn, and then tap to confirm the imported files.

  5. Tap the server name Android, and tap OK to accept the connection.

    The OpenVPN log shows you the connection process.

    If the client is connected to the PBX server, you can see the status shown as below.