| 摘要 |
<p>An art for minimizing transmission delay of low-rate data such as voice data and for enhancing the transmission efficiency in multiplexed data communication using with AAL type 2 is disclosed. The SSCS of the high-rate data side of the AAL type 2 is responsible for addition and elimination of a dummy code field, error correction, and division and reassembly of data unit. Therefor, a dummy code field 3 and restorative code field 10 are attached to a user data unit 1 which is supplied from the higher layer in a source device, whereby a data unit 11 is prepared. The data unit 11 is then divided into segments 12-1 to 12-m of a fixed-length, 45 octets. Successive code fields 6-1 to 6-m are attached to the segments 12-1 to 12-m, whereby data blocks 13-1 to 13-m are prepared. The data blocks 13-1 to 13-m are successively transferred to an AAL-2 converter 24. In a destination device, from the data blocks 13-1 to 13-m, the user data unit 1 is reassembled conversely. <IMAGE></p> |
