To attain the switch from a free information offered to a toll information offered also during a speech, in a charging switching method for performing the switch of a transmission charging and an incoming charging.
A transmitter 1 and the call incoming person 11 of an information provider are connected via a network 20 performing a charging processing. When the call incoming person 11 transmits a transmission charging setting request signal to the network 20 by a call tariff request and an information charge request during a speech, a charging switching is announced from the network 20 to the transmitter 1, and when the transmitter 1 accepts the transmission charging switch by the continuity of the speech, the network 20 switches a charging destination to the transmitter 1 and transmits a transmission charging setting confirmation signal to the call incoming person 11. By the information charge charging setting request signal from the call incoming person 11, the network 20 transmits the charging switching announcement to the transmitter 1. When the transmitter 1 continues a speech state, the charging of information charge is started and the information charge charging setting confirmation signal is transmitted to be call incoming person 11.
INOUE TAMOTSU
OGAWA KAZUHIKO
NIPPON TELEGRAPH & TELEPHONE