It seems like you might be referring to "VPN Call," which could mean connecting to a Virtual Private Server (VPS) or a VPN service. VPNs are used to secure internet communication over the internet, and they can be accessed through a web browser, an online VPN service, or a desktop application.

1. Open your browser and navigate to a VPN server. You can use any VPN service that supports web access, such as:

   • OpenVPN (if you're using a server like OpenVPN.com or the OpenVPN browser extension)
   • Tor (a web-based service that offers a fast and reliable VPN)
   • Vpn Everywhere (a popular online VPN service)
   • VPN.com (a well-known online VPN)

2. Choose your connection type:

   • Web-based VPNs like OpenVPN or Tor allow you to connect directly to a server via your browser.
   • Desktop VPNs like Vpn Everywhere or VPN.com come with a desktop app for on-the-go access.

3. Set up your connection:

   • If you're using a server like Tor, you can access it directly in your browser.
   • If you're using a web-based VPN, you'll connect to the server through your browser.

4. Log in to your account:

   Once connected, you'll need to log in to your account to access the VPN features like web browsing, email, and messaging.

If you're asking about "vpn呼叫," it might be a specific command or feature within a VPN service. If you're referring to a command or feature, let me know, and I can provide more detailed instructions!