PSTN Signaling Mechanism Anjali Agarwal These slides are from the text book: “IP Telephony: The Integration of Robust VoIP Services” by Bill Douskalis, Hewlett- Packard, 2000. ISBN: 0-13-014118-6. Overview of SS7 Implemented as a packet-switched network Is a common channel, out of band signaling network, however may traverse on links that carry voice […]
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Differentiated Services Anjali Agarwal Disadvantages of Integrated Services Routers keep flow-specific state for each flow State information increases with number of flows Routers need large storage space and high processing power Routers more complex – need to implement RSVP protocol, admission control, packet classifier, per-flow packet-scheduling algorithm 2 Differentiated Services
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Integrated Services/RSVP Anjali Agarwal Integrated Services IP Model Defines a flow as a stream of IP packets » Generated by a sender and destined to a destination » ThatrequirethesameQoS Provides QoS to individual flows in the Internet » “Better than Best Effort” for some applications » Supportforreal-timevoiceandvideoapplications Requires traffic management mechanisms to
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Packet-Switching Networks Routing in Packet Networks Routing in Packet Networks 1 3 4 2 1-3-6, 1-4-5-6, 1-2-5-6 Which is “best”? Min delay? Min hop? Max bandwidth? Min cost? Max reliability? 5 Three possible (loopfree) routes from 1 to 6: Node (switch or router) 6 Creating the Routing Tables Need information
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Advanced Telecommunication Networks ELEC472 Lab Manual Department of Electrical and Computer Engineering Concordia University Winter 2021 1 Table of Contents Table of Contents……………………………………………………………………………………………………………. 2 Lab Guide………………………………………………………………………………………………………………………. 4 User agreement and license ………………………………………………………………………………………….. 4 Report Description ………………………………………………………………………………………………………. 5 Grading Scheme………………………………………………………………………………………………………….. 5 Submission Conditions ………………………………………………………………………………………………… 5 Experiment execution ………………………………………………………………………………………………….. 6 Manual update and corrections …………………………………………………………………………………………. 6 Experiment
Internet Telephony and Related Protocols Anjali Agarwal Features of Internet Telephony Beyond just “cheaper phone calls”, there are a number of advantages – Adjustable quality: » end systems can control the amount of compression based on net-work bandwidth or the content to be transmitted. Security: » it is probably easier to tap a
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Algorithms and Analysis COSC 1285/2123 Assignment 1 Assessment Type Group assignment. Groups as allocated and notified on Can- vas. Submit online via Canvas → Assignments → Assign- ment 1. Marks awarded for meeting requirements as closely as possible. Clarifications/updates may be made via announce- ments/relevant discussion forums. Due Date Friday 16th April 2021, 11:59pm Marks
B-Trees (Chapter 18) Bayer and McCreight (1972) What does the “B” stand for? Background › A B-tree is a balanced search tree which is used to store the keys to large file and database systems › Because: – only a part of a B-tree can be stored in primary (main) memory at a time and
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FIT3173: Secure Software Development & Threat Modelling Department of Software Systems and Cybersecurity Faculty of Information Technology Learning Outcomes of This Lecture Copyright By PowCoder代写 加微信 powcoder • Understand secure software development process • Know the definition of threat modelling and how to apply threat modelling • Identify threats using data flow diagram • Analyse
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