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  RTP -- Audio Transmission (PCMA)

Category: VoIP-APPS      

Application: RTP      

RTP opens two ports for communication. One for the media stream (an even port number) and one for control (QoS feedback and media control) - RTCP. The port numbers are not hard defined, it depends very much upon the application.

This SonicWALL signature identifies legitimate Real-Time Protocol (RTP) with Pulse Code Modulation Audio (PCMA) encoded Payload traffic over UDP.



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