Yealink SIP-T42S - Page 4

GNU GPL INFORMATION
Yealink SIP-T42S IP phone 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.