YEALINK NETWORK TECHNOLOGY CO. LTD. T21P User Manual
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Yealink SIP-T21P 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: