英文關鍵字
answer
ask
background
bell
black
blackboard
business
call
cell
center
chalk
chalkboard
chat
communication
connection
contact
customer
data
drawn
faq
handset
help
helpdesk
helpline
hotline
icon
idea
info
inform
information
letter
line
logo
message
mobile
online
pattern
phone
question
service
sign
sound
support
symbol
talk
talking
telephone
template
voice