Yealink W59R

W90 DECT IP Multi-Cell System
Quick Start Guide
http://support.yealink.com/
For W90DM/W90B rmware 130.85.193.3 or later
For W59R rmware 115.85.193.1 or later
For W53H rmware 88.85.193.5 or later
(V85.3)