基于RTP的VoIP会话日志语音恢复机制

2011 IEEE 5th International Conference on Internet Multimedia Systems Architecture and Application Pub Date : 2011-12-01 DOI:10.1109/IMSAA.2011.6156339

Paromita Choudhury, K. R. P. Kumar, G. Athithan, Sukumar Nandi

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引用次数: 1

摘要

语音和数据在互联网协议(IP)网络上的融合导致了IP语音(VoIP)的巨大增长。在SIP/ H.323信令协议占主导地位的同时，RTP被广泛用于媒体传输。某些情况下可能需要记录RTP会话以及用于呼叫和语音分析的信令信息。从RTP包中恢复语音需要明确地处理RTP栈和解码。在本文中，我们提出了一种使用具有适当编解码器支持的软电话从记录的RTP数据包中恢复语音的方案。它是使用RTP固有的规定来完成的，特别是ssrc多路复用。该方案还提出了基于RTP的VoIP中主动流注入攻击的可能性。

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A mechanism to recover voice from logged VoIP sessions based on RTP

The convergence of voice and data on Internet Protocol (IP) networks has led to tremendous growth of Voice over IP (VoIP). While SIP/ H.323 are dominant signaling protocols, RTP is widely used for media transfer. Certain situations may require logging of RTP sessions along with the signaling information for call and voice analysis. Recovering voice from RTP packets requires explicit handling of RTP stack and decoding. In this paper, we propose a scheme that uses softphones with appropriate codec support for voice recovery from logged RTP packets. It is done using inherent provisions of RTP, specifically SSRC-multiplexing. The scheme also suggests the possibility of an active stream injection attack in RTP based VoIP.

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2011 IEEE 5th International Conference on Internet Multimedia Systems Architecture and Application

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