Yealink user guide
Yealink T2 Series IP Phones User Guide V86.15
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About this user guide
About the T2 Series IP Phones User Guide V86.15
Yealink's user guide for the Yealink SIP-T21(P) E2 and SIP-T21P, covering everyday calling, contacts, voicemail and phone settings (109 pages). This is version 86.15, last updated by Yealink on October 23, 2025, 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.
SIP-T21(P) E2 is end of sale. Support options, dates and replacementsWhat’s inside
- Before You Begin
- Related Documentation
- Summary of Changes
- Changes for Release V86, Guide Version V86.15
- Getting Started
- Hardware Overview
- T2X Series Hardware
- Power LED Indicator
- Line Key LED
- Screen and Icons
- Idle Screen
- Calls Screen
- Icons in the Status Bar
- Line Key Icons
- Entering Characters
- Call Features
- Changing the Default Account
- Placing Calls
- Placing a Call from the Dialer
- Placing Multiple Calls
- Placing a Call with a Speed Dial Key
- Placing a Call Back to the Last Incoming Number
- Redialing a Number
- Dialing a Hotline Number
- Placing an International Call
- Placing a Call from the Call History
- Placing a Call from the Directory
- Placing an Anonymous Call
- Placing Calls to Google Contacts
- Placing an Emergency Call from a Locked Phone
- Answering Calls
- Answering a Call
- Answering a Call When in a Call
- Answering a Call Automatically
- Switching Among the Handset, Speakerphone and Headset Modes
- Disabling Call Waiting
- Silencing or Rejecting Incoming Calls
- Silencing a Call
- Rejecting a Call Manually
- Rejecting Anonymous Calls
Phones covered
Yealink phones this user guide covers
Related
More Yealink user guides
- PDFYealink SIP-T21P & SIP-T21 User Guide V72 1DownloadUpdated Oct 24, 2025SIP-T21P
FAQ
Questions about this document
Quick answers, and The Tech Team™ is a call away if you need more.
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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.