User Manual
Table Of Contents
- About This Guide
- Table of Contents
- Overview
- Getting Started
- Customizing Your Phone
- Basic Call Features
- Advanced Phone Features
- Troubleshooting
- Regulatory Notices
- Appendix A - Time Zones
- Index
Yealink SIP-T21(P) E2 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.