Patent ID: 7710880
Filing Date: 2010-05-04
Classification: H04L,H04Q

Abstract:
1. A security protection method for performing security protection during service interruption occurring in a switch network, comprising: selecting, by a transmitting-end device, a sub-route from a plurality of sub-routes and transmitting a call to an opposite-end device via a trunk device; analyzing, by the trunk device, a route condition from the current selected sub-route to the opposite-end device when the call is received; transmitting, by the trunk device, the call to the opposite-end device according to the route condition when the route condition is normal; otherwise, reporting a blocking message to the transmitting-end device; and excluding, by the transmitting-end device, the current selected sub-route when the transmitting-end device receives the blocking message, selecting a next sub-route to initiate the call when not all sub-routes are excluded; otherwise, ending selecting the sub-routes.