| 摘要 |
A network node whereby there is no loss of communication quality and the call interruption time can be shortened to continue communication even when the codec used by one terminal during communication changes. In MSC/MGW (110) for forwarding data between two terminals when one of the two terminals performing communication in a first network transfers to a second network different from the first network, codec detector (804) detects both a first codec used by one terminal in the first network and a second codec used by one terminal in the second network. When the first codec is a codec having a mode compatible with the second codec, RTP payload generator (808) switches the codec of data transmitted from one terminal to the compatible mode of the first codec, thereby generating data for the other terminal, and transmitter (802) transmits the data for the other terminal to the other terminal. |
