How do I install a Zultys EHS to a standard AT&T coredless headset? The headset was listed as compatible to Zultys Zip37G which is my phone. I have the EHS but no matter how I connect it does wanna work. Can anyone just let me know that steps? Please?

It should be pretty straight forward. Did you plug the EHS to the Ext jack at the back of the 37G?

I saw a post that stated he/she got this working in January of 2017 .