Yealink T21PE2 User Manual

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Recommended References
For more information on configuring and administering other Yealink products not included in this guide, refer to the
product support page at Yealink Technical Support.
To access the latest Release Notes or other guides for Yealink IP phones, refer to the Document Download page for
your phone at Yealink Technical Support.
If you want to find Request for Comments (RFC) documents, type http://www.ietf.org/rfc/rfcNNNN.txt (NNNN is the
RFC number) into the location field of your browser.
For other references, look for the hyperlink or web info throughout this administrator guide.
Typographic and Writing Conventions
Yealink documentations contain a few typographic conventions and writing conventions.
You need to know the following basic typographic conventions to distinguish types of in-text information:
Convention Description
Bold
Highlight the web/phone user interface items such as menus, menu selections, soft keys, or directory
names when they are involved in a procedure or user action (for example, click Settings->Upgrade.).
Also used to emphasize text (for example, Important!).
Italics
Used to emphasize text, to show the example values or inputs (format of examples: http(s)://[IPv6
address] ).
Blue Text
Used for cross references to other topics related to this topic (for example, Ring Tones), for hyperlinks to
external sites and documents, for example, RFC 3315 or Yealink_SIP_IP_Phones_Auto_Provisioning_Guide.
You also need to know the following writing conventions to distinguish conditional information:
Convention Description
<>
Indicate that you must enter information specific to phone or network. For example, when you see
<MAC>, enter your phone’s 12-digit MAC address. If you see <phoneIPAddress>, enter your phone’s IP
address.
->
Indicate that you need to select an item from a menu. For example, Settings->Basic Settings indicates
that you need to select Basic Settings from the Settings menu.

Yealink T21PE2 Specifications

General

Brand	Yealink
Model	T21PE2
Category	IP Phone
Language	English