Manually Configuring a Yealink T20, T22, T26, T28 for 3CX Phone System

This guide has been tested for Yealink T20, T22, T26 and T28 with firmware version X.51.0.10, Be aware that different firmware revisions may have different web interface formats and functionality.

The preferred method to configure a Yealink T2X Phone is via Provisioning. You can however follow this guide to manually configure your phone.

http://www.3cx.com/sip-phones/Yealink.html