Patent ID: 7746801

Claim:
A method of monitoring a communication network between an ingress node and an egress node, comprising: determining, by an ingress node, a quality measurement of a data stream; determining, by the ingress node, an operating procedure by comparing the quality measurement to a quality control profile, the operating procedure indicating operation of said ingress node and an egress node, and the quality control profile being provided by a monitoring device such that the operating procedure changes based on the quality control profile; assigning first time stamps to data packet samples of a data stream, by said ingress node; assigning second time stamps to said data packet samples of said data stream, by said egress node; determining an evaluation of communication network performances, according to at least one of said first and second time stamps; and performing the assigning first time stamps step, the assigning second time stamps step, and the determining an evaluation step according to the operating procedure.