There is no Sound in my Yealink EHS? What Gives?

When we’re using a Sennheiser headset and Yealink EHS, if the Y-shaped cord is plugged in backward (big part of Y in EHS36 and a small part in Senn base) this will cause there to be no sound in the headset!

All you have to do is flip it around so that the end that is by itself is in the headset base, then one of the Y parts will go into the Yealink box. The picture below will show you!