| 摘要 |
<p>A toll switching office, interconnected to other toll switching offices in a communications network, such as a digital TDM telecommunications, Internet, packet data, frame relay and like networks, maintains a via list of the status and availability of facilities. A toll switching office that experiences difficulty in handling communications traffic alerts the other toll switching offices to remove the troubled office from the respective via list maintained by each toll switching office and, where available, in a network management operating system or NEMOS database, so as to limit the traffic routed to the troubled switch to LEC or terminating traffic only, while routing any additional traffic around the troubled switch to prevent loss of traffic or overloading the facility. <IMAGE></p> |
