| 摘要 |
<p>PURPOSE:To select either a data gram system or a virtual circuit system depending on the data kind by selecting an outgoing trunk from a routine table and selecting a line definitely depending on line selection information of a packet when a truck has plural lines. CONSTITUTION:The data gram system is basically the same as the virtual circuit system and in this case, a call packet processing process 21 gives line selection information 33 able to select an optional line. A line selection process 28 selects a line according to a load decentralizing system or the like when the line selection information represents the possibility of an optional line selection. An in-network packet conversion process 27 applies sequential control. Thus, which of the virtual circuit system and the data gram system in to be selected is decided by a call packet (e.g., by protocol ID) or at network registration.</p> |
