method and netzwerkelemente to inhaltsduplizierung in paketnetzwerken

摘要

In accordance with the invention, there is provided method for duplicating communications content in a telecommunications network, wherein the content is transported in a layered communications protocol comprising at least one protocol layer. The method comprises receiving first data identifying the content to be duplicated, receiving second data identifying a lowest protocol layers to be duplicated, and duplicating the content as identified by said first data including all protocol information of the lowest protocol layer as identified by said second data, further including all higher layer protocol information. An advantage thereof is that, by means of the second data, the protocol depth of the duplication may be influenced. For example, if the content is transported by the protocols RTP (real-time protocol), UDP (user datagram protocol), and IP (internet protocol), then by means of the second data the content alone, or the content plus the entire RTP protocol information (of which the content is the payload), or the entire IP traffic associated with the content to be duplicated could be selected for duplication. A preferred application of the duplication method is lawful interception (LI), wherein the duplicated content and protocol information along with labels and/or parameters, if applicable, is forwarded to a monitoring facility or monitoring center.