VoIP. ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "VoIP. ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts"

Transcription

1 VoIP ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts

2 VoIP System

3 Gatekeeper: A gatekeeper is useful for handling VoIP call connections includes managing terminals, gateways and MCU's (multipoint control units). A VoIP gatekeeper also provides address translation, bandwidth control, access control A VoIP gatekeeper can improve Security and Quality of Service (QoS) VoIP Gateway: A VoIP gateway is also required to handle external calls. A VoIP gateway functions as a converter that converting VoIP calls to/from the traditional PSTN lines VoIP Clients: Other required VoIP hardware includes a VoIP client terminal, a VoIP device could be an IP Phone, or a multimedia PC or a VoIP-enabled workstation runs VoIP software.

4 PSTN vs. VoIP PSTN Voice networks use circuit switching. Dedicated path between calling and Called party. Bandwidth is reserved in advance. Each line is 64kbps. Cost is based on distance and time. Features such as call waiting, Caller ID and so on are usually available at an extra cost VoIP VoIP uses packet switching. No dedicated path between sender and receiver. It acquires and releases bandwidth, as it is needed. Cost is not dependent on time and distance. Features such as call waiting, Caller ID and so on are usually included free with service

5 PSTN VoIP Can be upgraded or expanded with new equipment. Long distance is usually per minute or bundled minute subscription. Hardwired landline phones (those without an adapter) usually remain active during power outage. Upgrades usually requires onl y bandwidth and software up grades. Long distance is often included in regular monthly p rice. Lose power, lose phone service without power backup in place.

6 Basic Principles of VoIP Audio Codec, Video Codec Data Transport (RTP, RTCP) Addressing Signaling (SIP, H.323)

7 Audio Codecs Are used to convert analog signal into digital data. The most common codecs for VoIP are Codec Bandwidth/kbps G G /56/64 G /6.3 Stands for coder-decoder: Since voice contains lot of data, it is compressed by coders without compromising the reliability and quality of voice signal.

8 Translation of Analog Signal to Digital Signal

9 Video Codec Video Codec: common examples include H.261 (for 64kbps and above), H.263 (for 64kbps and below), and MPEG 4. The encoded information is then encapsulated within an IP packet and these packets are then transported across the network to their destination.

10 Data Transport (RTP,RTCP) RTP It stands for Real time Transport Protocol. Application layer protocol for transmitting real time data (audio, video,...) Includes sequence numbering, time stamping, delivery monitoring.

11 RTCP It stands for Real time Transport Control Protocol. While RTP carries the media streams (e.g., audio and video), RTCP is used to monitor transmission statistics and quality of service (QoS) and aids synchronization of multiple streams. Main functions: support for multi-point communication

12 VoIP SIGNALING PROTOCOLS Signaling in VoIP is needed for -To establish a point to point connection and to keep it open for the duration of the call. -Agreeing on coding /decoding procedures. Types of Signaling Protocols: H.323 SIP

13 H.323

14 H.323 H.323 is a set of protocols for sending voice, video and data over IP network to provide real-time multimedia communications. H.323 is reliable and easy to maintain technology 1. Terminals 2. Gateways 3. Gatekeepers 4. Multipoint control units (MCUs) An H.323 zone is a collection of all terminals, gateways, and MCUs managed by a single gatekeeper. A zone includes at least one terminal and may include gateways or MCUs. A zone has only one gatekeeper. A zone may be independent from network topology.

15 There are four basic entities in a default H.323 network : Terminal: H.323 terminal also called H.323 client is the end-user device. It could be IP telephone or a multimedia PC with another H.323 client. That provides real-time two-way media communication. H.323 Gateways (GW): A Gateway (GW) is an optional component that provides inter-net work translation between terminals. Gatekeepers (GK): A Gatekeeper (GK) is an optional component provides address translations and access control services. Multipoint Control Units (MCU):A Multipoint Control Unit (MCU) functions as a bridge or switch that enables three or more terminals and gateways in a multipoint conference.

16 H.323 Characteristics Allows transmission of video and data while a phone call is in progress Incorporates protocols for security. Uses a special hardware Multipoint Control Unit for conferencing calls. Defines servers for address resolution, authentication, accounting, features, etc.

17 SIP SIP stands for Session Initiation Protocol. Developed by IETF since SIP is the core protocol for initiating, managing and terminating communication sessions (i.e audio & video call) over the Internet. These sessions may be text, voice, video or a combination of these. SIP sessions involve one or more participants and can use unicast or multicast communication. Sessions include Internet Multimedia conferences or Internet Telephone calls.

18 SIP SIP is a signaling control protocol which is similar to http. it s designed to initial and terminate VoIP sessions with one or more participants. It is less weight and more flexible than H.323 that also can be used for multimedia sessions such as audio, video and data.

19 SIP SIP has two components: User Agents and SIP servers. User agents are peers in a SIP. User agents could be either an agent client or an agent server. A user agent client initiates by sending a SIP request. A user agent server can accept, terminate or redirect the request as responses to this SIP request. There are three types of SIP servers include SIP proxy servers, SIP registrar servers, and SIP redirect servers. A SIP server functions as a server that handles these requests, e.g. requests transferring, security, authentication, and call routing. e.g. Microsoft MSN Messenger, Apple ichat.

20 SIP Characteristics Operates at the application layer. Encompasses all aspects of signaling, e.g. location of called party, ringing a phone, accepting a call, and terminating a call. Provides services such as call forwarding. Relies on multicast for conference calls. Allows two sides to negotiate capabilities and choose the media and parameters to be used.

21 SIP Methods Six basic message types, known as methods:

22 Thank you! You can find us at

Pilsung Taegyun A Fathur Afif A Hari A Gary A Dhika April Mulya Yusuf Anin A Rizka B Dion Siska Mirel Hani Airita Voice over Internet Protocol Course Number : TTH2A3 CLO : 2 Week : 7 ext Circuit Switch

More information

TSIN02 - Internetworking

TSIN02 - Internetworking Lecture 8: SIP and H323 Litterature: 2004 Image Coding Group, Linköpings Universitet Lecture 8: SIP and H323 Goals: After this lecture you should Understand the basics of SIP and it's architecture Understand

More information

Chapter 11: Understanding the H.323 Standard

Chapter 11: Understanding the H.323 Standard Página 1 de 7 Chapter 11: Understanding the H.323 Standard This chapter contains information about the H.323 standard and its architecture, and discusses how Microsoft Windows NetMeeting supports H.323

More information

Overview of the Session Initiation Protocol

Overview of the Session Initiation Protocol CHAPTER 1 This chapter provides an overview of SIP. It includes the following sections: Introduction to SIP, page 1-1 Components of SIP, page 1-2 How SIP Works, page 1-3 SIP Versus H.323, page 1-8 Introduction

More information

Multimedia Applications. Classification of Applications. Transport and Network Layer

Multimedia Applications. Classification of Applications. Transport and Network Layer Chapter 2: Representation of Multimedia Data Chapter 3: Multimedia Systems Communication Aspects and Services Multimedia Applications and Communication Protocols Quality of Service and Resource Management

More information

H.323. Definition. Overview. Topics

H.323. Definition. Overview. Topics H.323 Definition H.323 is a standard that specifies the components, protocols and procedures that provide multimedia communication services real-time audio, video, and data communications over packet networks,

More information

TODAY AGENDA. VOIP Mobile IP

TODAY AGENDA. VOIP Mobile IP VOIP & MOBILE IP PREVIOUS LECTURE Why Networks? And types of Networks Network Topologies Protocols, Elements and Applications of Protocols TCP/IP and OSI Model Packet and Circuit Switching 2 TODAY AGENDA

More information

Outline Overview Multimedia Applications Signaling Protocols (SIP/SDP, SAP, H.323, MGCP) Streaming Protocols (RTP, RTSP, HTTP, etc.) QoS (RSVP, Diff-S

Outline Overview Multimedia Applications Signaling Protocols (SIP/SDP, SAP, H.323, MGCP) Streaming Protocols (RTP, RTSP, HTTP, etc.) QoS (RSVP, Diff-S Internet Multimedia Architecture Outline Overview Multimedia Applications Signaling Protocols (SIP/SDP, SAP, H.323, MGCP) Streaming Protocols (RTP, RTSP, HTTP, etc.) QoS (RSVP, Diff-Serv, IntServ) Conclusions

More information

Kommunikationssysteme [KS]

Kommunikationssysteme [KS] Kommunikationssysteme [KS] Dr.-Ing. Falko Dressler Computer Networks and Communication Systems Department of Computer Sciences University of Erlangen-Nürnberg http://www7.informatik.uni-erlangen.de/~dressler/

More information

Network+ Guide to Networks 6th Edition. Chapter 12 Voice and Video Over IP

Network+ Guide to Networks 6th Edition. Chapter 12 Voice and Video Over IP Network+ Guide to Networks 6th Edition Chapter 12 Voice and Video Over IP Objectives Use terminology specific to converged networks Explain VoIP (Voice over IP) services, PBXs, and their user interfaces

More information

Real-time Services BUPT/QMUL

Real-time Services BUPT/QMUL Real-time Services BUPT/QMUL 2017-05-27 Agenda Real-time services over Internet Real-time transport protocols RTP (Real-time Transport Protocol) RTCP (RTP Control Protocol) Multimedia signaling protocols

More information

Basic Architecture of H.323 C. Schlatter,

Basic Architecture of H.323 C. Schlatter, Basic Architecture of H.323 C. Schlatter, schlatter@switch.ch 2003 SWITCH Agenda Background to H.323 Components of H.323 H.323 Protocols Overview H.323 Call Establishment 2003 SWITCH 2 Background to H.323

More information

VoIP Basics. 2005, NETSETRA Corporation Ltd. All rights reserved.

VoIP Basics. 2005, NETSETRA Corporation Ltd. All rights reserved. VoIP Basics Phone Network Typical SS7 Network Architecture What is VoIP? (or IP Telephony) Voice over IP (VoIP) is the transmission of digitized telephone calls over a packet switched data network (like

More information

Overview. Slide. Special Module on Media Processing and Communication

Overview. Slide. Special Module on Media Processing and Communication Overview Review of last class Protocol stack for multimedia services Real-time transport protocol (RTP) RTP control protocol (RTCP) Real-time streaming protocol (RTSP) SIP Special Module on Media Processing

More information

The H.323 protocol suite. How works one of the protocol architectures for VoIP

The H.323 protocol suite. How works one of the protocol architectures for VoIP The H.323 protocol suite How works one of the protocol architectures for VoIP 1 Basic characteristics Standard for LAN communication Packet switched networks without guaranteed quality Extended to operate

More information

Real-time Services BUPT/QMUL

Real-time Services BUPT/QMUL Real-time Services BUPT/QMUL 2015-06-02 Agenda Real-time services over Internet Real-time transport protocols RTP (Real-time Transport Protocol) RTCP (RTP Control Protocol) Multimedia signaling protocols

More information

Media Communications Internet Telephony and Teleconference

Media Communications Internet Telephony and Teleconference Lesson 13 Media Communications Internet Telephony and Teleconference Scenario and Issue of IP Telephony Scenario and Issue of IP Teleconference ITU and IETF Standards for IP Telephony/conf. H.323 Standard

More information

Seminar report IP Telephony

Seminar report IP Telephony A Seminar report On IP Telephony Submitted in partial fulfillment of the requirement for the award of degree of Bachelor of Technology in Computer Science SUBMITTED TO: www.studymafia.org SUBMITTED BY:

More information

Mohammad Hossein Manshaei 1393

Mohammad Hossein Manshaei 1393 Mohammad Hossein Manshaei manshaei@gmail.com 1393 Voice and Video over IP Slides derived from those available on the Web site of the book Computer Networking, by Kurose and Ross, PEARSON 2 Multimedia networking:

More information

ETSF10 Internet Protocols Transport Layer Protocols

ETSF10 Internet Protocols Transport Layer Protocols ETSF10 Internet Protocols Transport Layer Protocols 2012, Part 2, Lecture 2.2 Kaan Bür, Jens Andersson Transport Layer Protocols Special Topic: Quality of Service (QoS) [ed.4 ch.24.1+5-6] [ed.5 ch.30.1-2]

More information

Real Time Protocols. Overview. Introduction. Tarik Cicic University of Oslo December IETF-suite of real-time protocols data transport:

Real Time Protocols. Overview. Introduction. Tarik Cicic University of Oslo December IETF-suite of real-time protocols data transport: Real Time Protocols Tarik Cicic University of Oslo December 2001 Overview IETF-suite of real-time protocols data transport: Real-time Transport Protocol (RTP) connection establishment and control: Real

More information

Transporting Voice by Using IP

Transporting Voice by Using IP Transporting Voice by Using IP National Chi Nan University Quincy Wu Email: solomon@ipv6.club.tw 1 Outline Introduction Voice over IP RTP & SIP Conclusion 2 Digital Circuit Technology Developed by telephone

More information

Introduction. We have learned

Introduction. We have learned H.323 Chapter 4 Introduction We have learned IP, UDP, RTP (RTCP) How does one party indicate to another a desire to set up a call? How does the second party indicate a willingness to accept the call? The

More information

Packetizer. Overview of H.323. Paul E. Jones. Rapporteur, ITU-T Q2/SG16 April 2007

Packetizer. Overview of H.323. Paul E. Jones. Rapporteur, ITU-T Q2/SG16 April 2007 Overview of H.323 Paul E. Jones Rapporteur, ITU-T Q2/SG16 paulej@packetizer.com April 2007 Copyright 2007 Executive Summary H.323 was first approved in February 1996, the same month that the first SIP

More information

Troubleshooting Voice Over IP with WireShark

Troubleshooting Voice Over IP with WireShark Hands-On Troubleshooting Voice Over IP with WireShark Course Description Voice over IP is being widely implemented both within companies and across the Internet. The key problems with IP voice services

More information

Provide a generic transport capabilities for real-time multimedia applications Supports both conversational and streaming applications

Provide a generic transport capabilities for real-time multimedia applications Supports both conversational and streaming applications Contents: Real-time Transport Protocol (RTP) Purpose Protocol Stack RTP Header Real-time Transport Control Protocol (RTCP) Voice over IP (VoIP) Motivation H.323 SIP VoIP Performance Tests Build-out Delay

More information

Popular protocols for serving media

Popular protocols for serving media Popular protocols for serving media Network transmission control RTP Realtime Transmission Protocol RTCP Realtime Transmission Control Protocol Session control Real-Time Streaming Protocol (RTSP) Session

More information

Department of Computer Science. Burapha University 6 SIP (I)

Department of Computer Science. Burapha University 6 SIP (I) Burapha University ก Department of Computer Science 6 SIP (I) Functionalities of SIP Network elements that might be used in the SIP network Structure of Request and Response SIP messages Other important

More information

A Novel Software-Based H.323 Gateway with

A Novel Software-Based H.323 Gateway with A Novel Software-Based H.323 Gateway with Proxy-TC for VoIP Systems Presenter : Wei-Sheng Yin Advisor : Dr. Po-Ning Chen Institute of Communications Engineering National Chiao Tung University Agenda Introduction

More information

SEMINAR TOPIC RAJAN KUMAR. 8 th SEM(ENTC-A) REGD. 03/27/09 1

SEMINAR TOPIC RAJAN KUMAR. 8 th SEM(ENTC-A) REGD. 03/27/09 1 SEMINAR TOPIC PRESENTED BY: RAJAN KUMAR SEM(ENTC-A) 8 th REGD. 03/27/09 1 OUTLINE INTRODUCTION WHAT IS VOIP? HISTORY PSTN Vs. VOIP MODES OF OPERATION OF VOIP BASIC PRINCIPLES OF VOIP HOW VOIP WORKS? ADVANTAGES

More information

Introduction. We have learned

Introduction. We have learned H.323 Introduction We have learned IP, UDP, RTP (RTCP) How voice is carried in RTP packets between session participants How does one party indicate to another a desire to set up a call? How does the second

More information

Summary of last time " " "

Summary of last time   Summary of last time " " " Part 1: Lecture 3 Beyond TCP TCP congestion control Slow start Congestion avoidance. TCP options Window scale SACKS Colloquia: Multipath TCP Further improvements on congestion

More information

Z24: Signalling Protocols

Z24: Signalling Protocols Z24: Signalling Protocols Mark Handley H.323 ITU protocol suite for audio/video conferencing over networks that do not provide guaranteed quality of service. H.225.0 layer Source: microsoft.com 1 H.323

More information

Multimedia Networking. Protocols for Real-Time Interactive Applications

Multimedia Networking. Protocols for Real-Time Interactive Applications Multimedia Networking Protocols for Real-Time Interactive Applications Real Time Protocol Real Time Control Protocol Session Initiation Protocol H.323 Real-Time Protocol (RTP) RTP is companion protocol

More information

ABSTRACT. that it avoids the tolls charged by ordinary telephone service

ABSTRACT. that it avoids the tolls charged by ordinary telephone service ABSTRACT VoIP (voice over IP - that is, voice delivered using the Internet Protocol) is a term used in IP telephony for a set of facilities for managing the delivery of voice information using the Internet

More information

atl IP Telephone SIP Compatibility

atl IP Telephone SIP Compatibility atl IP Telephone SIP Compatibility Introduction atl has released a new range of IP Telephones the IP 300S (basic business IP telephone) and IP400 (Multimedia over IP telephone, MOIP or videophone). The

More information

Introduction. H.323 Basics CHAPTER

Introduction. H.323 Basics CHAPTER CHAPTER 1 Last revised on: October 30, 2009 This chapter provides an overview of the standard and the video infrastructure components used to build an videoconferencing network. It describes the basics

More information

Multimedia Communications

Multimedia Communications Multimedia Communications Directions and Innovations Introduction István Beszteri istvan.beszteri@hut.fi Multimedia Communications: Source Representations, Networks and Applications! Introduction! Networks

More information

B.Eng. (Hons.) Telecommunications. Examinations for / Semester 1

B.Eng. (Hons.) Telecommunications. Examinations for / Semester 1 B.Eng. (Hons.) Telecommunications Cohort: BTEL/12/FT Examinations for 2014-2015 / Semester 1 MODULE: IP TELEPHONY MODULE CODE: TELC 3107 Duration: 3 Hours Instructions to Candidates: 1. Answer all questions.

More information

Guide to TCP/IP, Third Edition. Chapter 6: Basic TCP/IP Services

Guide to TCP/IP, Third Edition. Chapter 6: Basic TCP/IP Services Guide to TCP/IP, Third Edition Chapter 6: Basic TCP/IP Services Objectives Understand how TCP/IP Application layer protocols and services work Explain the capabilities, message types, and request/reply

More information

Internet Streaming Media. Reji Mathew NICTA & CSE UNSW COMP9519 Multimedia Systems S2 2006

Internet Streaming Media. Reji Mathew NICTA & CSE UNSW COMP9519 Multimedia Systems S2 2006 Internet Streaming Media Reji Mathew NICTA & CSE UNSW COMP9519 Multimedia Systems S2 2006 Multimedia Streaming UDP preferred for streaming System Overview Protocol stack Protocols RTP + RTCP SDP RTSP SIP

More information

4 rd class Department of Network College of IT- University of Babylon

4 rd class Department of Network College of IT- University of Babylon 1. INTRODUCTION We can divide audio and video services into three broad categories: streaming stored audio/video, streaming live audio/video, and interactive audio/video. Streaming means a user can listen

More information

Lecture 14: Multimedia Communications

Lecture 14: Multimedia Communications Lecture 14: Multimedia Communications Prof. Shervin Shirmohammadi SITE, University of Ottawa Fall 2005 CEG 4183 14-1 Multimedia Characteristics Bandwidth Media has natural bitrate, not very flexible. Packet

More information

Guide to TCP/IP, Third. Chapter 6: Basic TCP/IP Services

Guide to TCP/IP, Third. Chapter 6: Basic TCP/IP Services Guide to TCP/IP, Third Edition Chapter 6: Basic TCP/IP Services Objectives Understand how TCP/IP Application layer protocols and services work Explain the capabilities, message types, and request/reply

More information

Security and Lawful Intercept In VoIP Networks. Manohar Mahavadi Centillium Communications Inc. Fremont, California

Security and Lawful Intercept In VoIP Networks. Manohar Mahavadi Centillium Communications Inc. Fremont, California Security and Lawful Intercept In VoIP Networks Manohar Mahavadi Centillium Communications Inc. Fremont, California Agenda VoIP: Packet switched network VoIP devices VoIP protocols Security and issues in

More information

Mahdi Amiri. May Sharif University of Technology

Mahdi Amiri. May Sharif University of Technology Course Presentation Multimedia Systems Multimedia Networking Part II Mahdi Amiri May 2014 Sharif University of Technology Multimedia Networking, QoS Multimedia Over Today s Internet TCP/UDP/IP: best-effort

More information

Multimedia Networking Communication Protocols

Multimedia Networking Communication Protocols Multimedia Networking Communication Protocols Signalling Demands in Real-Time Systems Real-Time Transport Conferencing: VoIP & VCoIP H.323 SIP/SDP/SAP/IMG Signalling Demands Media Types can be signalled

More information

Networking Applications

Networking Applications Networking Dr. Ayman A. Abdel-Hamid College of Computing and Information Technology Arab Academy for Science & Technology and Maritime Transport Multimedia Multimedia 1 Outline Audio and Video Services

More information

The Session Initiation Protocol

The Session Initiation Protocol The Session Initiation Protocol N. C. State University CSC557 Multimedia Computing and Networking Fall 2001 Lecture # 25 Roadmap for Multimedia Networking 2 1. Introduction why QoS? what are the problems?

More information

A common issue that affects the QoS of packetized audio is jitter. Voice data requires a constant packet interarrival rate at receivers to convert

A common issue that affects the QoS of packetized audio is jitter. Voice data requires a constant packet interarrival rate at receivers to convert A common issue that affects the QoS of packetized audio is jitter. Voice data requires a constant packet interarrival rate at receivers to convert data into a proper analog signal for playback. The variations

More information

Voice over IP (VoIP)

Voice over IP (VoIP) Voice over IP (VoIP) David Wang, Ph.D. UT Arlington 1 Purposes of this Lecture To present an overview of Voice over IP To use VoIP as an example To review what we have learned so far To use what we have

More information

Multimedia Networking. Network Support for Multimedia Applications

Multimedia Networking. Network Support for Multimedia Applications Multimedia Networking Network Support for Multimedia Applications Protocols for Real Time Interactive Applications Differentiated Services (DiffServ) Per Connection Quality of Services Guarantees (IntServ)

More information

Multimedia and the Internet

Multimedia and the Internet Multimedia and the Internet More and more multimedia streaming applications in the Internet: Video on Demand IP telephony Internet radio Teleconferencing Interactive Games Virtual/augmented Reality Tele

More information

Multimedia Communications

Multimedia Communications Multimedia Communications Prof. Pallapa Venkataram, Electrical Communication Engineering, Indian Institute of Science, Bangalore 560012, India Objectives To know the networking evolution. To understand

More information

VoIP Core Technologies. Aarti Iyengar Apricot 2004

VoIP Core Technologies. Aarti Iyengar Apricot 2004 VoIP Core Technologies Aarti Iyengar Apricot 2004 Copyright 2004 Table Of Contents What is Internet Telephony or Voice over IP? VoIP Network Paradigms Key VoIP Protocols Call Control and Signaling protocols

More information

Multimedia Networking

Multimedia Networking CMPT765/408 08-1 Multimedia Networking 1 Overview Multimedia Networking The note is mainly based on Chapter 7, Computer Networking, A Top-Down Approach Featuring the Internet (4th edition), by J.F. Kurose

More information

Internet Streaming Media. Reji Mathew NICTA & CSE UNSW COMP9519 Multimedia Systems S2 2007

Internet Streaming Media. Reji Mathew NICTA & CSE UNSW COMP9519 Multimedia Systems S2 2007 Internet Streaming Media Reji Mathew NICTA & CSE UNSW COMP9519 Multimedia Systems S2 2007 Multimedia Streaming UDP preferred for streaming System Overview Protocol stack Protocols RTP + RTCP SDP RTSP SIP

More information

CSCD 433/533 Advanced Networks Fall Lecture 14 RTSP and Transport Protocols/ RTP

CSCD 433/533 Advanced Networks Fall Lecture 14 RTSP and Transport Protocols/ RTP CSCD 433/533 Advanced Networks Fall 2012 Lecture 14 RTSP and Transport Protocols/ RTP 1 Topics Multimedia Player RTSP Review RTP Real Time Protocol Requirements for RTP RTP Details Applications that use

More information

Secure Telephony Enabled Middle-box (STEM)

Secure Telephony Enabled Middle-box (STEM) Report on Secure Telephony Enabled Middle-box (STEM) Maggie Nguyen 04/14/2003 Dr. Mark Stamp - SJSU - CS 265 - Spring 2003 Table of Content 1. Introduction 1 2. IP Telephony Overview.. 1 2.1 Major Components

More information

CS519: Computer Networks. Lecture 9: May 03, 2004 Media over Internet

CS519: Computer Networks. Lecture 9: May 03, 2004 Media over Internet : Computer Networks Lecture 9: May 03, 2004 Media over Internet Media over the Internet Media = Voice and Video Key characteristic of media: Realtime Which we ve chosen to define in terms of playback,

More information

Cisco Unified MeetingPlace Integration

Cisco Unified MeetingPlace Integration CHAPTER 14 This chapter covers system-level design and implementation of Cisco Unified MeetingPlace 5.4 in a Cisco Unified Communications Manager 5.x environment. The following aspects of design and configuration

More information

Setting Up a Mitel SX-2000 Digital PIMG Integration with Cisco Unity Connection

Setting Up a Mitel SX-2000 Digital PIMG Integration with Cisco Unity Connection Up a Mitel SX-2000 Digital PIMG Integration with Cisco Unity Connection Up a Mitel SX-2000 Digital PIMG Integration, page 1 Up a Mitel SX-2000 Digital PIMG Integration Task List for Mitel SX-2000 PIMG

More information

Technical. Configure the MiVoice Business 7.1 for use with XO Communications SIP Services. Configuration Notes. MITEL SIP CoE

Technical. Configure the MiVoice Business 7.1 for use with XO Communications SIP Services. Configuration Notes. MITEL SIP CoE MITEL SIP CoE Technical Configuration Notes Configure the MiVoice Business 7.1 for use with SIP Services MAY 2015 SIP COE 10-4940-00105 TECHNICAL CONFIGURATION NOTES NOTICE The information contained in

More information

ES623 Networked Embedded Systems

ES623 Networked Embedded Systems ES623 Networked Embedded Systems Introduction to Network models & Data Communication 16 th April 2013 OSI Models An ISO standard that covers all aspects of network communication is the Open Systems Interconnection

More information

Mitel SIP CoE Technical Configuration

Mitel SIP CoE Technical Configuration Mitel SIP CoE Technical Configuration G12 Communications 1 (877) 311-8750 sales@g12com.com 150 Lake Street South, Kirkland, WA 98033 NOTICE The information contained in this document is believed to be

More information

Evolving Telecommunications to Triple Play:

Evolving Telecommunications to Triple Play: Hands-On Evolving Telecommunications to Triple Play: IPTV, VoIP and TV Delivery Systems for System Engineers-DataCom Course Description With the introduction of Next Generation Networks to telecommunications

More information

H.323 Tutorial Realsoft Corporation January 12, 2000

H.323 Tutorial Realsoft Corporation  January 12, 2000 H.323 Tutorial 2000 Realsoft Corporation http://www.realsoft-corp.com/ January 12, 2000 Abstract: This document summarizes the H.323 (H.225, H.245) Recommendation into an understandable tutorial. Much

More information

Improving QoS of VoIP over Wireless Networks (IQ-VW)

Improving QoS of VoIP over Wireless Networks (IQ-VW) Improving QoS of VoIP over Wireless Networks (IQ-VW) Mona Habib & Nirmala Bulusu CS522 12/09/2002 1 Agenda Voice over IP (VoIP): Why? VoIP Protocols: H.323 and SIP Quality of Service (QoS) Wireless Networks

More information

Cisco Cisco Voice over IP (CVOICE) Practice Test. Version QQ:

Cisco Cisco Voice over IP (CVOICE) Practice Test. Version QQ: Cisco 642-436 642-436 Cisco Voice over IP (CVOICE) Practice Test Version 3.8 QUESTION NO: 1 Cisco 642-436: Practice Exam Which two statements describe the purpose of the technology prefix? (Choose two.)

More information

IMS Client Framework for All IP-Based Communication Networks

IMS Client Framework for All IP-Based Communication Networks IMS Client Framework for All IP-Based Communication Networks D. Jayaram, S. Vijay Anand, Vamshi Raghav, Prashanth Kumar, K. Riyaz & K. Kishan Larsen & Toubro InfoTech Limited Research and Development Group,

More information

Multimedia networking: outline

Multimedia networking: outline Multimedia networking: outline 7.1 multimedia networking applications 7.2 streaming stored video 7.3 voice-over-ip 7.4 protocols for real-time conversational applications: RTP, SIP 7.5 network support

More information

The Frozen Mountain irtc White Paper Series

The Frozen Mountain irtc White Paper Series The Frozen Mountain irtc White Paper Series This white paper is the fourth in a series on Internet Based Real Time Communications (irtc) written by Frozen Mountain Software s CTO Anton Venema. The complete

More information

The Frozen Mountain irtc White Paper Series

The Frozen Mountain irtc White Paper Series The Frozen Mountain irtc White Paper Series This white paper is the fifth in a series on Internet Based Real Time Communications (irtc) written by Frozen Mountain Software s CTO Anton Venema. The complete

More information

Protocols supporting VoIP

Protocols supporting VoIP Protocols supporting VoIP Dr. Danny Tsang Department of Electronic & Computer Engineering Hong Kong University of Science and Technology 1 Outline Overview Session Control and Signaling Protocol H.323

More information

Real-Time Control Protocol (RTCP)

Real-Time Control Protocol (RTCP) Real-Time Control Protocol (RTCP) works in conjunction with RTP each participant in RTP session periodically sends RTCP control packets to all other participants each RTCP packet contains sender and/or

More information

Computer Networks. Wenzhong Li. Nanjing University

Computer Networks. Wenzhong Li. Nanjing University Computer Networks Wenzhong Li Nanjing University 1 Chapter 5. End-to-End Protocols Transport Services and Mechanisms User Datagram Protocol (UDP) Transmission Control Protocol (TCP) TCP Congestion Control

More information

Streaming Video over the Internet. Dr. Dapeng Wu University of Florida Department of Electrical and Computer Engineering

Streaming Video over the Internet. Dr. Dapeng Wu University of Florida Department of Electrical and Computer Engineering Streaming Video over the Internet Dr. Dapeng Wu University of Florida Department of Electrical and Computer Engineering What is Streaming Video? Download mode: no delay bound Streaming mode: delay bound

More information

Setting Up an Alcatel 4400 Digital PIMG Integration with Cisco Unity Connection

Setting Up an Alcatel 4400 Digital PIMG Integration with Cisco Unity Connection up Alcatel 4400 Digital PIMG Integration with Cisco Unity Connection Up an Alcatel 4400 Digital PIMG Integration with Cisco Unity Connection, page 1 Up an Alcatel 4400 Digital PIMG Integration with Cisco

More information

Provides port number addressing, so that the correct destination application can receive the packet

Provides port number addressing, so that the correct destination application can receive the packet Why Voice over IP? Traditional TDM (Time-division multiplexing) High recurring maintenance costs Monolithic switch design with proprietary interfaces Uses dedicated, voice-only bandwidth in HFC network

More information

Multimedia Systems Multimedia Networking Part II Mahdi Amiri December 2015 Sharif University of Technology

Multimedia Systems Multimedia Networking Part II Mahdi Amiri December 2015 Sharif University of Technology Course Presentation Multimedia Systems Multimedia Networking Part II Mahdi Amiri December 2015 Sharif University of Technology Multimedia Networking, QoS Multimedia Over Today s Internet TCP/UDP/IP: best-effort

More information

Internet Streaming Media

Internet Streaming Media Multimedia Streaming Internet Streaming Media Reji Mathew NICTA & CSE UNSW COMP9519 Multimedia Systems S2 2006 preferred for streaming System Overview Protocol stack Protocols + SDP SIP Encoder Side Issues

More information

INSE 7110 Winter 2009 Value Added Services Engineering in Next Generation Networks Week #2. Roch H. Glitho- Ericsson/Concordia University

INSE 7110 Winter 2009 Value Added Services Engineering in Next Generation Networks Week #2. Roch H. Glitho- Ericsson/Concordia University INSE 7110 Winter 2009 Value Added Services Engineering in Next Generation Networks Week #2 1 Outline 1. Basics 2. Media Handling 3. Quality of Service (QoS) 2 Basics - Definitions - History - Standards.

More information

RTP. Prof. C. Noronha RTP. Real-Time Transport Protocol RFC 1889

RTP. Prof. C. Noronha RTP. Real-Time Transport Protocol RFC 1889 RTP Real-Time Transport Protocol RFC 1889 1 What is RTP? Primary objective: stream continuous media over a best-effort packet-switched network in an interoperable way. Protocol requirements: Payload Type

More information

Location Based Advanced Phone Dialer. A mobile client solution to perform voice calls over internet protocol. Jorge Duda de Matos

Location Based Advanced Phone Dialer. A mobile client solution to perform voice calls over internet protocol. Jorge Duda de Matos Location Based Advanced Phone Dialer A mobile client solution to perform voice calls over internet protocol Jorge Duda de Matos Superior Institute of Technology (IST) Lisbon, Portugal Abstract Mobile communication

More information

Exam Questions

Exam Questions Exam Questions 920-180 ncts real time networking https://www.2passeasy.com/dumps/920-180/ 1. Which three components are H.323 endpoints? (Choose three.) A. Gatekeeper B. Terminal C. Gateway D. Multipoint

More information

Video conferencing. Introduction Standards Products Internet telephony Computer Telephony Integration (CTI)

Video conferencing. Introduction Standards Products Internet telephony Computer Telephony Integration (CTI) Video conferencing Introduction Standards Products Internet telephony Computer Telephony Integration (CTI) 1 Introduction Video conferencing can be used for Several benefits Audio-visual communication

More information

13. Internet Applications 최양희서울대학교컴퓨터공학부

13. Internet Applications 최양희서울대학교컴퓨터공학부 13. Internet Applications 최양희서울대학교컴퓨터공학부 Internet Applications Telnet File Transfer (FTP) E-mail (SMTP) Web (HTTP) Internet Telephony (SIP/SDP) Presence Multimedia (Audio/Video Broadcasting, AoD/VoD) Network

More information

System-Level Configuration Settings

System-Level Configuration Settings CHAPTER 5 Configure system-level settings before you add devices and configure other Cisco Unified CallManager features. This section covers the following topics: Server Configuration, page 5-1 Cisco Unified

More information

Approaches to Deploying VoIP Technology Instead of PSTN Case Study: Libyan Telephone Company to Facilitate the Internal Work between the Branches

Approaches to Deploying VoIP Technology Instead of PSTN Case Study: Libyan Telephone Company to Facilitate the Internal Work between the Branches Approaches to Deploying VoIP Technology Instead of PSTN Case Study: Libyan Telephone Company to Facilitate the Internal Work between the Branches Dr. Elmabruk M Laias * Department of Computer, Omar Al-mukhtar

More information

Course 20337B: Enterprise Voice and Online Services with Microsoft Lync Server 2013 Exam Code: Duration:40 Hrs

Course 20337B: Enterprise Voice and Online Services with Microsoft Lync Server 2013 Exam Code: Duration:40 Hrs Course 20337B: Enterprise Voice and Online Services with Microsoft Lync Server 2013 Exam Code: 70-337 Duration:40 Hrs Course Outline Module 1: Voice Architecture This module introduce Enterprise Voice

More information

Video Streaming in Wireless Environments

Video Streaming in Wireless Environments Video Streaming in Wireless Environments Manoj Kumar C Advisor Prof. Sridhar Iyer Kanwal Rekhi School of Information Technology Indian Institute of Technology, Bombay Mumbai 1 Motivation Refers to real-time

More information

Non. Interworking between SIP and H.323, MGCP, Megaco/H.248 LS'LDORJ,QF 7HFKQRORJ\ 'ULYH 6XLWH 3KRQH )D[

Non. Interworking between SIP and H.323, MGCP, Megaco/H.248 LS'LDORJ,QF 7HFKQRORJ\ 'ULYH 6XLWH 3KRQH )D[ Non Interworking between SIP and H.323, MGCP, Megaco/H.248 7HFKQRORJ\ 'ULYH 6XLWH 3KRQH )D[ 6DQ -RVH &$ 86$ 85/ ZZZLSGLDORJFRP Joon Maeng Jörg Ott jmaeng@ipdialog.com jo@ipdialog.com The Starting Point

More information

Transport protocols Introduction

Transport protocols Introduction Transport protocols 12.1 Introduction All protocol suites have one or more transport protocols to mask the corresponding application protocols from the service provided by the different types of network

More information

Multimedia Networking

Multimedia Networking Multimedia Networking Victor Gau Information Processing Lab. 2008/03/07 Outline Introduction Network Basics Quality of Service Applications VoIP IPTV Telematics Multimedia Multimedia (Lat. Multum + Medium)

More information

VPN-1 Power/UTM. Administration guide Version NGX R

VPN-1 Power/UTM. Administration guide Version NGX R VPN-1 Power/UTM Administration guide Version NGX R65.2.100 January 15, 2009 2003-2009 Check Point Software Technologies Ltd. All rights reserved. This product and related documentation are protected by

More information

Reflections on Security Options for the Real-time Transport Protocol Framework. Colin Perkins

Reflections on Security Options for the Real-time Transport Protocol Framework. Colin Perkins Reflections on Security Options for the Real-time Transport Protocol Framework Colin Perkins Real-time Transport Protocol Framework RTP: A Transport Protocol for Real-Time Applications RFCs 3550 and 3551

More information

Performance Evaluation of Telephony Routing over IP (TRIP)

Performance Evaluation of Telephony Routing over IP (TRIP) Performance Evaluation of Telephony Routing over IP (TRIP) Matthew C. Schlesener Master s Thesis Defense November 25, 2002 Defense Committee: Dr. Victor Frost (Chair) Dr. Joseph Evans Dr. Gary Minden Presentation

More information

Problem verification during execution of H.323 signaling

Problem verification during execution of H.323 signaling Problem verification during execution of H.323 signaling 1 ESAD KADUSIC & 2 NATASA ZIVIC & 3 NARCIS BEHLILOVIC & 4 ALIJA VEGARA 1,3,4 Faculty of Electrical Engineering in Sarajevo Zmaja od Bosne, 71 000

More information

Setting up Alcatel 4400 Digital PIMG Integration

Setting up Alcatel 4400 Digital PIMG Integration up Alcatel 4400 Digital PIMG Integration with Cisco Unity Connection Up an Alcatel 4400 Digital PIMG Integration with Cisco Unity Connection, on page 1 Up an Alcatel 4400 Digital PIMG Integration with

More information

Cisco ATA 191 Analog Telephone Adapter Overview

Cisco ATA 191 Analog Telephone Adapter Overview Cisco ATA 191 Analog Telephone Adapter Overview Your Analog Telephone Adapter, page 1 Your Analog Telephone Adapter The ATA 191 analog telephone adapter is a telephony-device-to-ethernet adapter that allows

More information