Yealink SIP-T21 User Manual

Yealink SIP-T21P/SIP-T21 firmware contains third-party software under the GNU General Public License (GPL).
Yealink uses software under the specific terms of the GPL. Please refer to the GPL for the exact terms and
conditions of the license.
The original GPL license, source code of components licensed under GPL and used in Yealink products can
be downloaded online:
http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=293&CateId=293.

Yealink SIP-T21 Specifications

General

Brand	Yealink
Model	SIP-T21
Category	IP Phone
Language	English