| 摘要 |
<p>PURPOSE:To connect a line by preferentially selecting the route of satisfactory line quality. CONSTITUTION:A line quality data storage part 3 receives and stores line quality data transmitted from transmission line equipments. A route table storage part 4 receives and stores a route table transmitted from the route table storage part of an exchange. A line quality calculation/deciding part 5 reads the line quality data from the line quality data storage part 3, calculates the line quality for each route set between a set call originating station and a call incoming station and decides an order showing the line quality levels of routes. A route table change part 6 changes the route table stored in the route table storage part 4 based on the decided result of the line quality calculation/judgement part 5. A control part 7 controls the respective parts.</p> |
