aid
ambulance
assistance
business
button
call
cellphone
clinic
communication
contact
conversation
cross
customer
design
dial
doctor
emergency
equipment
first
flat
graphic
handset
health
help
hospital
hotline
icon
illustration
information
isolated
medical
medicine
message
mobile
number
phone
police
red
rescue
safety
service
sign
support
symbol
talk
technology
telecom
telephone