| 摘要 |
<p>When media communication is relayed through a circuit switching network and a packet switching network, packet congestion and packet loss is inhibited by limiting the bandwidth and the number of packets on the packet switching network. Audio packets received from the packet switching network are stored in a buffer for absorbing fluctuation on the packet switching network, and it is determined whether an encoded audio stream is acquirable from the buffer. If acquisition is not possible based on the determination result, an encoded audio stream representing one of silence and noise information is generated and multiplexed, and the multiplexed data is output to the circuit switching network. On the other hand, multiplexed data constituted by a plurality of multiplexed encoded streams received from the circuit switching network is separated into the respective encoded streams, and only encoded audio streams representing sound or noise information are packetized based on the frame information for the encoded audio streams and sent to the packet switching network.</p> |
