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OpenVPN Feature on Yealink IP Phones

A Yealink document for the Yealink W53H and W53P (33 pages).
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Newer version available: OpenVPN Feature on Yealink IP Phones V1.0

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About this document

About the OpenVPN Feature on Yealink IP Phones

A Yealink document for the Yealink W53H and W53P (33 pages). This copy, last updated by Yealink on January 29, 2026, and you can read it right here or download it.

These phones have been discontinued by Yealink, but they're still widely used, and this document is still the reference for setting them up. The Tech Team™ supports end-of-life Yealink phones and can help you plan a replacement when you're ready.

W53H is end of sale. Support options, dates and replacements

What’s inside

  1. About VPN
  2. Types of VPN Access
  3. VPN Technology
  4. Example Use of a VPN Tunnel
  5. Yealink IP Phones Compatible with VPN
  6. Installing the OpenVPN Server
  7. Installing and Configuring the OpenVPN Server on the Linux Platform
  8. Creating the OpenVPN TAR File for the VPN Client on the Linux Platform
  9. Installing and Configuring the OpenVPN Server on the Windows Platform
  10. Creating the OpenVPN Tar File for the VPN Client on the Windows Platform
  11. Configuring OpenVPN Feature on IP Phones
  12. For Old Auto Provisioning Mechanism
  13. For New Auto Provisioning Mechanism
  14. Troubleshooting
  15. Why does the phone fail to connect to the OpenVPN server?
  16. How to change the signature algorithm of the certificate?
  17. Why does the phone fail to register to the SIP server after successfully connecting to the OpenVPN server?
  18. Why does the phone fail to register when the domain name of the SIP server is configured on the IP phone?
  19. Why there is no sound during a call?
  20. Why the voice quality is poor?
  21. Glossary
  22. Example Configuration Files
  23. Server Configuration File
  24. Client Configuration File

Phones covered

Yealink phones this document covers

Yealink W53H
W53HEnd of Sale
Yealink W53P
W53PEnd of Sale

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Related

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FAQ

Questions about this document

Quick answers, and The Tech Team™ is a call away if you need more.

Contact us (800) 943-7675

Need help with your W53H?

The Tech Team™ can provision, update and troubleshoot your Yealink phones, and move your office onto smplVoice cloud voice.

Talk to a technician (800) 943-7675

Yealink and Yealink product names are trademarks of Yealink Network Technology Co., Ltd. Product information, images and documents are published by Yealink and provided here for reference by smplVoice. Firmware and documents are Yealink’s original, unmodified files.