In the US we have captioning telephones. The services are regulated by the Federal Communication Commission (FCC). They are available for landlines, internet connected phones, mobile. and computer. Some examples are  CapTel, CaptionCall, ClearCaptions, InnoCaption to name a few.  A French company called RogerVoice is also approved to use in the US and can be use globally.

https://rogervoice.com/en/