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    • 4. 发明授权
    • Method and arrangement for controlling alternative routing of traffic in a circuit-switched network
    • 用于控制电路交换网络中业务的替代路由的方法和装置
    • US06606380B1
    • 2003-08-12
    • US09482034
    • 2000-01-13
    • René PetersenTommy Petersen
    • René PetersenTommy Petersen
    • H04M700
    • H04Q3/66
    • The method comprises receiving call signalling in a node and routing the call in accordance with the call signalling. If congestion is met, it is decided whether an alternative routing is allowed in dependence on parameters associated with the call and the node and the call is routed in accordance with such allowed alternative routing. If congestion is met again or no alternative is allowed, it is decided if the call should be released or subject to crankback, dependent on parameters associated with said call and node. By receiving indicators with the call signalling, indicating the types of alternative routing performed in preceding nodes and using said indicators as parameters for the above decisions, and updating said indicators for each call whenever alternative routing is performed for said call, the alternative routing can be controlled in an improved and simple manner. Several types of alternative routing may be available in the nodes.
    • 该方法包括在节点中接收呼叫信令,并根据呼叫信令路由呼叫。 如果满足拥塞,则根据与呼叫和节点相关联的参数来决定是否允许替代路由,并且根据这种允许的替代路由路由呼叫。 如果再次满足拥塞或不允许其他选择,则根据与所述呼叫和节点相关联的参数,决定呼叫是否应该释放或受到启动。通过接收具有呼叫信令的指示符,指示执行的替代路由的类型 在上述节点中并且使用所述指示符作为上述决定的参数,并且每当为所述呼叫执行替代路由时更新每个呼叫的所述指示符,则可以以改进和简单的方式来控制替代路由。几种类型的替代路由可以是 在节点中可用。