A method is disclosed for detecting and diagnosing faults in a network. The network has a plurality of nodes through which switched virtual connections can be established. First, all attempts at establishing routes through the network are recorded. Then, the location of a failure is determined by analyzing...http://www.google.com/patents/USRE40148?utm_source=gb-gplus-sharePatent USRE40148 - Switched connections diagnostics in a signalling network