Patent ID: 7957367
Filing Date: 2011-06-07
Classification: H04L,H04M

Abstract:
1. A called IP telephone apparatus connected to an ENUM server and to a call agent apparatus, the ENUM server storing a NAPTR (Naming Authority Pointer) resource record, the NAPTR resource record including a URI corresponding to an ENUM domain name, the call agent apparatus controlling a connection between the called IP apparatus and a calling IP telephone apparatus, the called IP telephone apparatus comprising: a display configured to display data; an Interface configured to receive an INVITE message from the call agent apparatus, the INVITE message including an IP telephone number of the calling IP telephone apparatus, the IP telephone number being utilizable for making a call via the Internet; a phonebook including PSTN telephone numbers respectively associated with caller's names; and a controller configured to; wherein the sounding, the transmitting the request, the receiving, the retrieving and the displaying by the controller are performed after the INVITE message is received by the called IP telephone apparatus and before an off-hook operation by the user of the called IP telephone apparatus is detected.