The triage calling system is also known as the queuing calling system, queuing machine and other names. The queuing machine is widely used in banks, industry and commerce, taxation, telecommunications, hospitals, postal services, finance, labor bureaus, personnel bureaus, and social security bureaus. , government one-stop service hall, civil aviation, driving school, insurance, vehicle management office, transportation management office business hall, consulate, immigration, customs, health bureau, technical supervision bureau, product customer service center and other window service industries.