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Yealink MP54&T55A Teams Phone Edition User Guide V15.1

Yealink's user guide for the Yealink T55A Teams Audio Phone, covering everyday calling, contacts, voicemail and phone settings (75 pages).

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About this user guide

About the MP54&T55A Teams Phone Edition User Guide V15.1

Yealink's user guide for the Yealink T55A Teams Audio Phone, covering everyday calling, contacts, voicemail and phone settings (75 pages). This is version 15.1, last updated by Yealink on October 21, 2025, and you can read it right here or download it.

The T55A Teams Audio Phone has been discontinued by Yealink, but it's still widely used, and this document is still the reference for setting it up. The Tech Team™ supports end-of-life Yealink phones and can help you plan a replacement when you're ready.

T55A Teams Audio Phone is end of life. Support options, dates and replacements

What’s inside

  1. About This Guide
  2. Related Documentations
  3. Summary of Changes
  4. Change for Guide Version 15.1
  5. Getting Started
  6. Hardware of T55A
  7. Hardware of MP54
  8. Power LED Indicator
  9. Accessing Screens on Yealink Teams Phones
  10. Home Screen
  11. Accessing the Calls Screen
  12. Accessing the Calendar Screen
  13. Accessing the Voicemail Screen
  14. Accessing the People Screen
  15. Entering Data and Editing Fields
  16. Using the On-screen Keyboard
  17. Using the On-screen Dial Pad
  18. Using the Phone Keypad
  19. Signing into Microsoft Teams and Locking Your Phone
  20. Signing into Your Device
  21. Signing into Microsoft Teams on Your Device
  22. Signing into Microsoft Teams via Web Sign-in
  23. Signing out of Your Device
  24. Phone Lock
  25. Creating a Lock PIN
  26. Enabling Phone Lock
  27. Setting the Idle Timeout for Phone Lock
  28. Unlocking Your Phone
  29. Changing Your Lock PIN
  30. Disabling Phone Lock
  31. Using a Teams Phone as a Common Area Phone
  32. Signing into a CAP/Meeting Account
  33. Signing out of a Common Area Phone
  34. Signing into a Teams Phone as a Guest User
  35. Signing in as a Guest User
  36. Signing out of the Guest User
  37. Changing Your Presence Status
  38. Contacts
  39. Managing Contact Groups
  40. View All Contact Groups

Phones covered

Yealink phones this user guide covers

FAQ

Questions about this document

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

Need help with your T55A Teams Audio Phone?

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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.