audio
ban
calls
cancel
closed
communication
connect
connection
contact
design element
dial
disallowed
flat
forbid
forbidden
glyph
hotline
illegal
message
mute
no
not allowed
not available
phone
pictogram
prohibit
prohibited
prohibition
raster icon
receiver
restrict
restricted
restriction
restrictive
rules
signal
silent
speak
speaker
stop
symbol
talk
telephone
voice
warning
wrong