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Voice over Internet Protocol (VoIP) The Dynamics of Technology and Regulation (PDF 166P)
This note covers the following topics: technology and regulation, voip classification and the regulatory challenges, methodology the system dynamics standard method, system dynamics model for calea, calea background, calea causal loops, Calea stock and flow, model analysis and policy lessons for Calea.
Author(s): Chintan Vaishnav
166 Pages 
This note covers the following topics: protocol overview, components, H.225, RAS , Q.931, H 235V2 security, H 323 & firewalls, sccpskinny, RTP and RTCP,SIP, sample sip session, request methods, request headers, replies, SDP and SIP fire
Author(s): NA
112 Pages
Security Considerations for Voice Over IP Systems (PDF 99P)
This document is published by National Institute of Standards and Technology, this covers the following: Overview of VOIP, VOIP Equipment, Quality of Service Issues, Overview of VOIP Data Handling ,Cost, Privacy and Legal Issues with VOIP, VOIP Security Issues,Speed and Quality, H.323, SIP Gateway Decomposition, Firewalls, Address Translation, and Call Establishment, Encryption and IPsec, Solutions to the VOIPsec Issues, Planning for VOIP Deployment, VOIP Risks, Threats, and Vulnerabilities.
Author(s): D. Richard Kuhn, Thomas J. Walsh, Steffen Fries
99 Pages
Voice over IP Protocols and Standards (PDF 20P)
This paper first discusses the key issues that inhibit Voice over IP (VOIP) to be popular with the users. This document discuss the protocols and standards that exist today and are required to make the VOIP products from different vendors to interoperate. The main focus is on H.323 and SIP (Session Initiation Protocol), which are the signaling protocols. We also discuss some hardware standards for internet telephony.
Author(s): Rakesh Arora
20 Pages
Security Issues and Countermeasure for VoIP (PDF 33p)
This paper focuses on these VoIP specific security threats and the countermeasures to mitigate the problem. At first, this paper gives a brief introduction of VoIP techniques: the network structure, network components, protocols and standards, data handling procedures, quality of service requirements, etc. Secondly, the paper discusses the VoIP specific security threats using the principle of CIA (Confidentiality, Integrity and Availability). The countermeasure to mitigate these threats is also discussed.
Author(s): Jianqiang Xin
33 PagesAdvertisement
