Patent ID: 7440446

Claim:
A voice over packet (VoP) system using a plurality of digital signal processors (DSPs) comprising: a plurality of first-stage DSPs, each DSP periodically processing voice signals of calls which are allocated in advance to each first-stage DSP based on processing capacity of each first-stage DSP, among calls input from a circuit network, and output packets corresponding to the voice signals; a plurality of first memories corresponding to the plurality of first-stage DSPs, respectively, and store feature data obtained from the voice signals of calls processed by the plurality of first-stage DSPs, respectively; a second memory which stores identification data, voice signals, and feature data obtained in the processes of a previous cycle, of calls exceeding the processing capacity of first-stage DSPs among the calls from the circuit network; a second-stage DSP which performs coding of voice signals stored in the second memory, outputs packets corresponding to the stored voice signals, and stores feature data obtained in the process of the voice signals, in the second memory; and a packet network interface which collects processing results of the first-stage DSPs and the second-stage DSP and distributes packets from a packet network to first-stage DSPs, wherein based on identification information added to the feature data stored in the second memory, each of the first-stage DSPs moves the feature data to the first memory disposed corresponding to the first-stage DSP.