There's of remote sign language interpretation and real time captioning services available. In the US, we have publicly funded video relay service (which translates between sign language and English for phone calls) and captioned calling (which provides captions for telephone calls). There are commercial equivalents of these services available for in person interactions and other countries.
Gallaudet, a college for Deaf students, even has videophone booths you can use for video relay service: https://createyourworldbook.com/wp-content/uploads/2018/06/d...