Patent ID: 6952468

Claim:
In a private exchange system connected to a computer telephony integration server having a database comprising of a phone number and a plurality of information corresponding to the phone number, and including at least one terminal being a slave terminal for receiving and displaying information of the database, a method for providing call-connected party's information in a private network using the private exchange system, comprising the steps of: generating an information retrieval request message having the requested phone number in the private exchange system, and allowing the private exchange system to transmit the information retrieval request message to the computer telephony integration server when there is an information retrieval request for a certain phone number in the private exchange system; checking whether there is a database matched with the phone number contained in the information retrieval request message in the computer telephony integration server, generating a database checking result message, and transmitting the database checking result message to the private exchange system upon receiving the information retrieval request message from the private exchange system; and allowing the private exchange system to transmit the information to a corresponding terminal upon receiving information matched with the phone number from the computer telephony integration server.