Patent ID: 7991144
Filing Date: 2011-08-02
Classification: H04M

Abstract:
1. A voice communication terminal which establishes a session and performs voice communication with a communication partner terminal through a packet communication network, comprising: a transmission module configured to generate and transmit a first outgoing call request message containing information indicating a source address and a destination address and information indicating a priority of outgoing call operation; a comparison module configured to, when a second outgoing call request message addressed to the terminal is received before an incoming call response message with respect to the first outgoing call request message is received from the destination terminal after the first outgoing call request message is transmitted, compares the information indicating the priority of outgoing call operation contained in the second outgoing call request message with the information indicating the priority of outgoing call operation contained in the first outgoing call request message transmitted by the terminal; and a control module configured to execute an incoming call response procedure corresponding to the second outgoing call request message when the priority of outgoing call operation in the second outgoing call request message is higher as the result of the comparison between the priorities of outgoing call operation, and to execute an outgoing call control procedure following the first outgoing call request message when the priority of outgoing call operation in the first outgoing call request message is higher; wherein the transmission module contains at least one of an outgoing time and a random number as information indicating the priority of outgoing call operation in the first outgoing call message.