It can provide with the operation functions of preferential intersecting multi-services. The counter can be performed subsidiary services and customer priority operation. It neednt switch off the machine to revise the service kinds, the system can adjust interface automatically. Inbuilt sound module and power amplification with high quality. Tone clear and fair-sounding. The intraday data can automatically be saved in the system when breaking power, there is not any worried need of the influence on queuing customers when power is broken