Patent ID: 6324278
Filing Date: 2001-11-27
Classification: H04Q

Abstract:
A switched telecommunication network comprising several exchanges (VStA, VStB, VStC, VStD, VStE) which are directly or indirectly interconnected such that at least between individual pairs of exchanges (VStA/VStE), more than two paths (VStA-VStB-VStE, VStA-VStC-VStE, VStA-VStD-VStE) are possible, and further comprising at least one routing facility (ARU) which decides on the selection of the respective path to be used for each connection to be established and which does not select a path if it was blocked on the previous attempt, characterized in that the routing facility (ARU) is designed not to select a path if said path is identical in at least one section (Mux-Mux) with a path which was blocked on the previous attempt,wherein the routing facility (ARU) will avoid said path which was blocked even if the at least one section was possibly unblocked on the previous attempt.