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 
Practical Voice Over IP Lecture notes
This note is to make you understand what Voice over IP (VoIP) systems are, their basic architectures, and the underlying protocols and provides a basis for your own research and development in this area.
Author(s): G. Q. Maguire Jr
429 Pages
Voice over IP by Dr. Aaron Solomon
This note covers the following topics: IP Telephony, Transporting Voice by Using IP,Session Initiation Protocol (SIP), IETF Structure and Internet Standards Process, SIP-based VoIP Lab, Socket Programming--Traceroute, IPv6 Socket Programming, UDP Socket Programming, Waveform Function.
Author(s): Dr. Aaron Solomon
NA 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
Voice over IP by Professor Richard Harris
This note covers the following topics: current state of the art in Internet Telephony, key protocols involved in VoIP and their roles in this new technology, limitations of current VoIP technology, key factors influencing the growth of Internet telephony services for global communications.
Author(s): Richard Harris
37 Pages
