| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication server capable of notifying a called terminal of caller information even if the called terminal is not notified of the caller information on a calling terminal via a communication carrier.SOLUTION: A communication server according to the present invention includes: means for receiving a call request signal including a telephone number of a called terminal in a public switched telephone network (PSTN) via an IP network; means for identifying caller information on a calling terminal having transmitted the request signal; means for allocating an address on the IP network to the calling terminal; means for transmitting the address and the request signal to a communication carrier including a gateway between the PSTN and the IP network; and means for transmitting the telephone number and the caller information to a transfer server that transfers information to a specified terminal. |
