Yealink SIP-T21 E2 Administrator's Guide

Configuring Basic Features
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To download template files:
1. Go to Yealink Document Download page and select the desired phone model.
2. Download and extract the combined files to your local system.
For example, the following illustration shows the template files available for SIP-T46G IP phones
running firmware version 81.
3. Open the folder you extracted and identify the template file you will edit according to the
table introduced above.
For some features, you can customize the filename as required. The following table lists the
special characters supported by Yealink IP phones:
Server
HTTP/HTTPS
TFTP/FTP
Windows
Support: ~ ` ! @ $ ^ ( ) _
- , . ' ; [ ] { } (including
space)
Not Support: | < > : "
/ \ * ? # % & = +
Support: ~ ` ! @ $ ^ ( )
_ - , . ' ; [ ] { } % & = +
(including space)
Not Support: | < > : "
/ \ * ? #
Linux
Support: ~ ` ! @ $ ^ ( ) _
- , . ' ; [ ] { } | < > : "
(including space)
Not Support: / \ * ? #
% & = +
Support: ~ ` ! @ $ ^ ( )
_ - , . ' ; [ ] { } | < > : " %
& = + (including space)
Not Support: / \ * ? #
Setting Up a Provisioning Server
This chapter provides basic instructions for setting up a provisioning server and deploying
phones from the provisioning server.
This chapter consists of the following sections:
 Why Using a Provisioning Server?
 Supported Provisioning Protocols
Platform

Yealink SIP-T21 E2 Specifications

General

Brand	Yealink
Model	SIP-T21 E2
Category	IP Phone
Language	English