Yealink user guide
Yealink T40P-Skype for Business Edition User Guide V8.70
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About this user guide
About the T40P-Skype for Business Edition User Guide V8.70
Yealink's user guide for the Yealink SIP-T40P, covering everyday calling, contacts, voicemail and phone settings (203 pages). This is version 8.70, last updated by Yealink on October 22, 2025, and you can read it right here or download it.
The SIP-T40P 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-T40P is end of sale. Support options, dates and replacementsWhat’s inside
- About This Guide
- In This Guide
- Summary of Changes
- Changes for Release 8, Guide Version 8.70
- Changes for Release 8, Guide Version 8.60
- Changes for Release 8, Guide Version 8.50
- Overview
- Hardware Component Instructions
- Icon Instructions
- LED Instructions
- User Interfaces
- Phone User Interface
- Web User Interface
- Documentations
- Getting Started
- Packaging Contents
- Optional Accessories
- Phone Installation
- Attaching the Stand or the Optional Wall Mount Bracket
- Connecting the Handset and Optional Headset
- Connecting the Power
- Connecting to the Network
- Phone Initialization
- Signing into Skype for Business
- User Sign-in
- PIN Authentication
- Web Sign-in
- Signing in via PC
- Signing Out of Skype for Business
- Changing Presence Status
- Always Online
- Account Lock
- Entering Data and Editing Fields
- Phone Status
- Basic Network Settings
- Idle Screen
- Customizing Your Phone
- General Settings
- Contrast
- Language
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-T40P
FAQ
Questions about this document
Quick answers, and The Tech Team™ is a call away if you need more.
Need help with your SIP-T40P?
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.