Symbols of accessibility and directional signage shall be provided to comply with the following:
If a facility has a public text telephone (TTY), directional signage indicating the location of the nearest text telephone (TTY) shall be placed adjacent to all banks of telephones which do not contain a text telephone (TTY). Such directional signage shall include the international TTY symbol.
Signage for hearing amplified telephone shall be identified with signage depicting a telephone handset earpiece with radiating sound waves and shall be placed on the wall above the amplified telephone or in a location on or near the phone so that it can be easily seen and located.
521 CMR, § 37.10