Open Source VoIP Traffic Monitoring - Luca Deri - Ntop

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• Signaling • User location • Session • Setup • Negotiation • Modification • Closing • Transport • Encoding, transport, etc. ntop.org <strong>VoIP</strong> Basics
Standard <strong>VoIP</strong> Protocols • SIP • IETF - 5060/5061 (TLS) - “HTTP-like, all in one” • Proprietary extensions • Protocol becoming an architecture • H.323 • Protocol family • ASN.1 based • H.235 (security), Q.931+H.245 (management), CODECs etc. • RTP (Real Time Protocol) • 5004/udp, RTCP: used to transport voice and video • No QoS/bandwidth management • Data is encoded using codecs ntop.org
Page 1 and 2: ntop.org Open Source VoIP Traffic M
Page 3 and 4: ntop.org Motivation for This Work
Page 5: ntop.org Approach Being Used • En
Page 9 and 10: PSTN ntop.org Flow-based Monitoring
Page 11 and 12: Standard VoIP: Implemented Metrics
Page 13 and 14: ntop.org ntop VoIP Support: SIP/RTP
Page 15 and 16: ntop.org ntop VoIP Support: Skype [
Page 17 and 18: ntop.org Challenges in VoIP Packet
Page 19 and 20: ID Intel Driver ntop.org Dynamic Pa
Page 21 and 22: ntop.org 3Com OSM Router/Switch The

Open Source VoIP Traffic Monitoring - Luca Deri - Ntop

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