Yealink user guide
Yealink T48S-Skype for Business Edition User Guide V9.45
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About this user guide
About the T48S-Skype for Business Edition User Guide V9.45
Yealink's user guide for the Yealink SIP-T48S, covering everyday calling, contacts, voicemail and phone settings (254 pages). This copy, last updated by Yealink on October 21, 2025, and you can read it right here or download it.
The SIP-T48S 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.
SIP-T48S is end of sale. Support options, dates and replacementsWhat’s inside
- About This Guide
- In This Guide
- Summary of Changes
- Changes for Release 9, Guide Version 9.45
- Changes for Release 9, Guide Version 9.30
- Overview
- Hardware Component Instructions
- Icons Instructions
- LED Instructions
- Power LED Indicators
- User Interfaces
- Phone User Interface
- Web User Interface
- Features Configurable via Phone/Web User Interface
- Documentations
- Getting Started
- Phone Initialization
- Signing into Skype for Business
- PIN Authentication
- User Sign-in
- Web Sign-In
- Signing in via PC
- Multi-factor Authentication
- Binding Your Mobile Phone with Online Account
- Passing MFA
- Signing Out of Skype for Business
- Presence Status
- Changing Presence Status
- Resetting Presence Status
- Touch Screen Display
- Favorites Screen
- History Screen
- Contacts Screen
- Menu Screen
- Navigating Menus and Fields
- Entering Data and Editing Fields
- Using the Phone Keypad
- Using the On-screen Keyboard
- Phone Status
- Viewing the Phone Status
Phones covered
Yealink phones this user guide covers
Related
More Yealink user guides
- PDFYealink T4 Series IP Phones User Guide V86.15DownloadUpdated Oct 22, 2025SIP-T48S
- PDFYealink T4 Series IP Phones User Guide V84.80DownloadUpdated Oct 22, 2025SIP-T48S
FAQ
Questions about this document
Quick answers, and The Tech Team™ is a call away if you need more.
Need help with your SIP-T48S?
The Tech Team™ can provision, update and troubleshoot your Yealink phones, and move your office onto smplVoice cloud voice.
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.