Patent ID: 9237076
Filing Date: 2016-01-12
CPC Classification: H04L,H04M,H04W

Claim Text:
1. A method for obtaining trace information in a packet switched network, the method comprising: a first end node sending a request message for setting up a test call towards a second end node in the packet switched network, the request message comprising a first request for collecting trace information; the second end node sending a first response message to the first end node in response to receipt of the request message, the first response message comprising a trace request and trace information; routing the first response message between the second end node and the first end node via at least a first intermediate node in the packet switched network, the first intermediate node adding additional trace information relating to the first intermediate node to the trace information of the first response message; the first end node receiving the first response message, the first response message comprising the additional trace information added by the first intermediate node.