Looking for phone equipment

I am 59 years old and I am about 70% deaf, particularly in the high frequency region and I need some help looking for equipment for making phone calls. I work in healthcare telocommunications and I need to have some sort of headset that I can use with my cellular and/or landline phone that will enable me to have clear communications with my colleagues.

I have tried bluetooth and I have seen some “muff” headsets but those are for the computer and I am not sure they will work with a cell phone. Does anyone on this forum have any advice/suggestions/personal stories?

-OJ

I´m profound hearing losses.
I have a CrystalTone-Plus (landline phone with 3.5 mm stereo plug) and use it with my Music-Link. I hear in both ears …
Music-Link take a look : http://www.hearinglosshelp.com/products/earlinks.htm#music_links