Patent ID: 6765862
Filing Date: 2004-07-20
Classification: H04L,H04Q

Abstract:
An ATM telecommunication switch, for switching telecommunication connections, the telecommunication switch comprising:incoming lines; outgoing lines; and a switching field for switching any connection from an incoming line to a desired outgoing line, the switching field including: inputs for supplying connections to the switching field; outputs for supplying connections out of the switching field; and a pre-selector provided between the incoming lines and inputs for selecting and connecting a desired incoming line of the telecommunication switch to a desired input of the switching field, said pre-selector being positioned outside of the switching field; wherein the pre-selector is arranged, when a fault occurs in a route connected to the output of the pre-selector, to connect a line of the route where the fault occurs to an alternative output therein, if the output of the pre-selector is redundant and idle, or if the line connected to it has a lower priority than incoming line of the route where the fault occurs.