Patent ID: 7778238
Filing Date: 2010-08-17
Classification: H04M,Y10S

Abstract:
1. An IP (Internet Protocol) telephone apparatus connected to an ENUM (Telephone Number Mapping) server, the ENUM server storing NAPTR (Naming Authority Pointer) records associated with telephone numbers, a NAPTR record including an access method and a destination information, the IP telephone apparatus comprising: a dialer configured to input a telephone number of a call destination; a display configured to display a message when a busy response is received from the call destination, wherein the message requests a user to confirm switching the access method; a data obtainer configured to obtain NAPTR records of the call destination from the ENUM server, based on the input telephone number of the call destination; a selector configured to select an NAPTR record from the obtained NAPTR records to transmit a call based on a priority order, and configured to select an NAPTR record with a next priority level when the user confirms switching the access method; and a transmitting unit configured to transmit a call to the call destination based on the access method and the destination information included in the NAPTR record selected by the selector.