METHOD AND APPARATUS FOR IDENTIFYING VOIP TRAFFIC

The present invention discloses a method for identifying Voice over Internet Protocol (VoIP) traffic. Based on a Media Gateway Control Protocol (MGCP), the method includes: identifying a packet related to a control connection by matching keywords according to an identification rule of the MGCP; extr...

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Bibliographic Details
Main Author GONG, YULIANG
Format Patent
LanguageEnglish
French
German
Published 19.03.2014
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:The present invention discloses a method for identifying Voice over Internet Protocol (VoIP) traffic. Based on a Media Gateway Control Protocol (MGCP), the method includes: identifying a packet related to a control connection by matching keywords according to an identification rule of the MGCP; extracting media connection negotiation information for establishing a media connection from the packet related to the control connection; matching the media connection negotiation information according to a transaction Identification (ID) in the media connection negotiation information; and identifying MGCP based VoIP traffic according to matching results. The present invention further discloses an apparatus for identifying VoIP traffic based on the MGCP. In the condition of using the MGCP and performing a plurality of media connection negotiations on one control connection simultaneously, the present invention can identify the MGCP based VoIP traffic without any particular requirement on the deployed positions of deep packet inspection devices.
Bibliography:Application Number: EP20100831077