Yealink, Microphone, models:

CPE80	Quick Start Manual
CPW65	Quick Start Manual Setup Manual
CPW65-DECT	Quick Start Manual
CPW90	Quick Start Manual
SkySound CM20	Quick Start Manual
VCM34	Quick Start Manual
VCM35	Quick Start Manual
VCM36	Connection Manual
VCM36-W	Connection Manual
VCM60	Quick Start Manual