Patent ID: 7359374
Filing Date: 2008-04-15
Classification: H04L

Abstract:
1. A relay device located at a boundary between an existing telephone network and an IP network, relaying a voice signal and an IP packet in a way that mutually converts the voice signal transferred and received over the existing telephone network and the IP packet transferred and received over the IP network, the relay device comprising: a receiving unit receiving voice source data into which a voice message is digitized; a packet processing unit converting the received voice source data into a voice source data packet as the IP packet; a storage unit storing the voice source data packets; and a transmitting unit transmitting, when transmitting a designated voice message to a designated destination, the voice source data packet corresponding to the designated voice message among the stored voice source data packets to the designated destination further comprising a retaining unit retaining, with respect to a on-transmission voice source data packet, for every on-transmission destination, a message management number of the voice message according to the on-transmission voice source data packet, a transmission interval timer and destination information for the on-transmission voice source data packet, wherein the transmitting unit transmits the same voice messages from the head of the voice messages respectively to a plurality of destinations by referring to or updating information retained by the retaining unit.