Speaker call-history presentation system, speaker call-history presentation method, IP telephone set, IP telephone method and program

摘要

According to an instruction of an operator of an IP telephone set 1, the IP telephone set 1 transfers a received signal transmitted from a caller, who is making a call, to a voiceprint collation server 2. Thereafter, the IP telephone set 1 receives and displays data on the caller's past call, which is transmitted from the voiceprint collation server 2 in response to the transfer described above. The voiceprint collation server 2 receives the received signal transferred from the IP telephone set 1, fetches voiceprint data from the received signal and transmits the data on the caller's past call, which is related to the voiceprint data, to the IP telephone set 1.