Lecture -33 VoIP Signaling : H.323 Protocol
Lecture Series on Digital Voice and Picture Communication by Prof.S. Sengupta, Department of Electronics and Electrical Communication Engg ,IIT Kharagpur . For more details on NPTEL visit nptel.iitm.ac.in
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Signaling and Switching for Packet Telephony
Signaling and Switching for Packet Telephony
This must-have reference on packet switching and signaling offers you an in-depth understanding of the core packet switching architectures, signaling flows, and packet formats, as well as service delivery. It describes in detail the design principles for packet telephone switches and emphasizes the benefits of a distributed architecture and separating bearer and control. Successful carrier-grade deployments of packet telephony entail much more than simply stuffing voice samples into IP packets or ATM cells. They involve deploying multiple protocols, and this book gives you a solid understanding of all protocols used and a clear sense of where individual protocols fit in a packet-based system.
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Price: 95.00
Signaling in Telecommunication Networks
Signaling in Telecommunication Networks
Guidance to help you grasp even the most complex network structures and signaling protocols. The Second Edition of Signaling in Telecommunication Networks has been thoroughly updated, offering new chapters and sections that cover the most recent developments in signaling systems and procedures. This acclaimed book covers subscriber and network signaling in both fixed and mobile networks. Coverage begins with an introduction to circuit-switched telephone networks, including an examination of trunks, exchanges, access systems, transmission systems, and other basic components. Next, the authors introduce signaling concepts, beginning with older Channel Associated Signaling (CAS) systems and progressing to today's Common Channel Signaling (CCS) systems. The book then examines packet networks and their use in transmitting voice (VoIP), TCP/IP protocols, VoIP signaling protocols, and ATM protocols. Throughout the book, the authors emphasize functionality, particularly the roles of individual protocols and how they fit in network architectures, helping readers grasp even the most complex network structures and signaling protocols. Highlights of the Second Edition include::; Coverage of the latest developments and topics, including new chapters on access networks, intelligent network application part, signaling for voice communication in packet networks, and ATM signaling; Drawings and tables that help readers understand and visualize complex systems; Comprehensive, updated references for further study; Examples to help readers make the bridge from theory to application. With the continued growth and expansion of the telecommunications industry, the Second Edition is essential reading for telecommunications students as well as anyone involved in this dynamic industry needing a solid understanding of the different signaling systems and how they work. Moreover, the book helps readers wade through the voluminous and complex technical standards by providing the essential structure, terminology, and functionality needed to understand them.
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DEFCON 19: Sounds Like Botnet
Speakers: Itzik Kotler Chief Technology Officer at Security Art | Iftach Ian Amit VP Consulting at Security Art VoIP is one of the most widely-used technologies among businesses and, increasingly, in households. It represents a combination of Internet technology and phone technology that enhances and expands the possibilities of both. One of these possibilities involves using it for botnet command and control infrastructure and a data exfiltration vector. The concept of VoIP Botnet is to operate in closed networks with limited access and the potential of censorship using everyday telecommunication and telephony services such as voicemail, conference calls, voice and signaling information. Moshi Moshi is a proof of concept VoIP Botnet that allows the operator to dial in from a pay phone or mobile phone, and get shell access and exfiltrate data from the bots. This presentation will discuss and demonstrate the use of VoIP technology to create "Moshi Moshi," we also explore some interesting properties of VoIP based botnet. Additionally, we will discuss mitigating factors and ways that VoIP providers should implement in order to prevent further VoIP abuse. For more information visit: bit.ly To download the video visit: bit.ly Playlist Defcon 19: bit.ly
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