Voice compression ratio switching system

Abstract

Abstract PURPOSE:To shorten voice data communication with fine tone quality when traffic is low and to shorten packet transmission delay when the traffic is high by monitoring the traffic state of a junction line in a packet exchange network and varying the compression ratio in compressing the voice data from terminal equipment. CONSTITUTION:A junction line traffic monitoring part 17 monitors the traffic state of the junction line at all times, and outputs the traffic monitoring information to a voice compression ratio switching part 16. The voice compression ratio switching part 16 compares the traffic of the junction line with the set value of the traffic set in advance, and the compression ratio control information is transmitted a voice data compression part 10 and a packet header generation part 18. The voice data compression part 10 compresses the voice data according to the compression ratio control information to output to a packet exchange part 21. Thus, the compression ratio of the voice data is lowered when the amount of the traffic of the junction line is small, to shorten the voice data transmission with fine tone quality and the voice compression ratio is lowered when the amount of the traffic is large, to shorten the packet transmission delay.

Inventors

• 👤 Masaru Yokoyama
• 👤 勝 横山

Bibliographic Details