Supply three billing initialization modes, polar-reverse, manually and delay automatically charge
Supply pre-payment option, including sum set and payment calculation after a call
Supply in-coming-call free or charge
Powerful statistic and print function
Store up to 200 phone bills, daily records for the latest 15 days
Supply multi-operator mode
Transmit tariff rate, clock, initialization and upgrade program rapidly by Serial Communication Tool
Rechargeable battery lasting up to 8 hours
Each phone line with a remote display for a caller