Before we start - Background
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About the course
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Terminology and concepts
Broad and deeper topics
Combines theory and practice
Your professor
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Principal Consultant at Riverbed Technology
Academic and professional experience
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Telecommunication
Modeling and simulation
Network optimization
Statistical and analytical analysis of networks and applications
Students
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Telecommunication and networking
Can you define VoIP?
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Course Introduction
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Instructor: Dragan Hrnjez
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Email: dhrnjez@gmu.edu
Location: offsite
Office Hours
Tuesdays, 6:30 PM to 7:10 PM, Location: ENGR, Room 4457 or Room 3707
 I prefer to handle as much by e-mail as possible
 Other arrangements can be made
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Recommended Books:
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There are no required books for this course. The following books are
optional (used during previous semesters):
Voice Over IP Fundamentals; Cisco Press; Davidson, Peters, Gracely, Bhatia,
Kalidindi, Mukherjee; 2nd Edition; July 2006
 IP Telephony: Deploying VoIP Protocols and IMS Infrastructure; John Wiley &
Sons Ltd.; Oliver Hersent; 2011
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RTP: Audio and Video for the Internet; Addison Wesley; Colin Perkins; June
2003
Website:
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http://mason.gmu.edu/~dhrnjez
Additional materials and useful links are also available
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Assignments and Grading Policy
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Midterm (in-class, closed-book/closed-notes)
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Labs (4 labs and the demo)
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Assigned second week and is due last week of semester
This is a group project (3-4 students)
40% of the grade
Final Exam (take home – last week of the semester)
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3-4 homework assignments
Due the following week after they are assigned
Hard copy is strongly desired
Project
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All four labs need to be turned in no later then
May 6th 2014
Homework
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90 minutes
MC/TF questions, simple problems
and essay questions
Comprehensive
MC/TF questions, more complex engineering problems and essay questions
Honor Code
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All assignments are conducted under the rules and regulations of the GMU Honor Code
Policy
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Logistic
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Lecture notes access:
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User id: tcom631
Password: voiceIP
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We will have one 10-minute break starting at around 8:30
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If we go over the planned material we could go home
earlier (no promises we will end up earlier)
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We will start on time so make sure you are not late
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If class is to be canceled you will receive my notification in
timely manner
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Cancellation announcement will also be posted in front of the
TCOM office
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Logistic (cont.)
 Make
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sure you attend these lectures
It will be very difficult to pass the exam if you are
absent
 Teaching
assistant and I will be here to answer
any questions related to this course, so don’t
hesitate to ask
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Labs
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X-Lite/Kapanga softphones and Asterisk Softswitch Labs
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Riverbed\OPNET Modeling and Simulation Labs
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We will need some extra headsets
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Reasonably Priced Headsets
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http://www.amazon.com/dp/B003YWVPN2/ref=psdc_3015405011_t3_B00HIW1E4Y
http://www.amazon.com/Etekcity%C2%AE-RoverBeats-Professional-HeadphoneMicphone/dp/B00HIW1E4Y/ref=sr_1_4?ie=UTF8&qid=1446748638&sr=84&keywords=headsets+with+microphone&refinements=p_85%3A2470955011%2Cp_n
_condition-type%3A6461716011
I have some of those but if you don’t like sharing them with others, get
your own
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Software installed in ENGR lab and can be used during scheduled
lab hours
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You will also need CDs or Memory Sticks to save your labs and
projects (GMU Lab computers are returned to the default state
every night and the data is lost)
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Alternative is to use some of your Linux user space
More about lab capabilities in 2 weeks
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Course Outline – Comprehensive VoIP
Topics
Book Readings
Introduction to Voice and Voice Transmission Technologies: Voice
characteristics, digitalization and encoding. Traditional circuit switched
equipment and networks used in telephony. Signaling basics. Potential use-cases
for VoIP deployments (benefits/challenges). Enterprise/Campus and Commercial
Telephony. Typical VoIP Connection Strategies.
Voice Over IP Fundamental
Chapter1
Chapter 2
Chapter 3 (not required)
Concept of Transporting Voice over a Packet Switched Network:
Internet Protocol (IP) introduction. Real time protocols: RTP, RTCP, RTSP, SCTP,
UDP-Lite/Liter - packet formats, functionality and features. Real-time media
synchronization.
Voice Over IP Fundamental
Chapter 6
Voice over IP Decomposition: Human voice and coding techniques,
compression. Factors that affect VoIP quality: delay, jitter, packet loss, echo.
Performance and quality metrics for VoIP: MOS, R-Factor, PESQ. VoIP
performance measurement and monitoring tools.
Voice Over IP Fundamental
Chapter 7
Intro to VoIP signaling protocols: Overview. H.323 signaling protocol:
format and inter-workings.
Voice Over IP Fundamental
Chapter 11
IP Telephony
Chapter 2
SIP Signaling Protocol: Architecture, format and inter-workings.
Voice Over IP Fundamental
Chapter 12
IP Telephony
Chapter 3
SS7 Signaling Protocol: Architecture, format and inter-workings (H.323, SIP
and ISUP (SS7) signaling protocols).
Voice Over IP Fundamental
Chapter 4
Voice over IP Network Planning and Design: Traffic analysis and
forecasting (advanced), numbering and dial plans, number routing, vendor
selection criteria for LAN and WAN deployments. E.911, CALEA.
Lecture notes and supplemental reading
RTP: Audio and Video for the Internet
RTP: Audio and Video for the Internet
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Course Outline – Comprehensive VoIP
Topics
Book Readings
The Softswitch Architecture: Interoperability of different signaling protocols
(H.323, SIP, SS7) using Softswitches, Applications of Softswitches in a carrier
grade VoIP environment. (SS7 signaling over IP-based networks). VoIP – PSTN
migration and integration strategies.
Voice Over IP Fundamental
Chapter 14
IP Telephony
Chapter 4
VoIP Quality and QoS: A thorough explanation of QoS components, protocols and
trade-offs. RSVP, Diffserv, MPLS and 801.2q protocols are covered in details in terms
packet format, features and functions and their pros and cons. format, features and
functions and their pros and cons.
Voice Over IP Fundamental
Chapter 8
VoIP Security: Requirements, technologies and NAT/Firewall considerations. VoIP
encryption analysis.
Voice Over IP Fundamental
Chapter 10
IP Telephony
Chapter 6
NextGen VoIP: VoIP Mobility. VoIP Equipment: Adapters, soft phones, WiFi
phones, mobile phones. Collaboration and presence. Billing and Mediation.
VoiceXML. IP Multimedia Subsystem (IMS).
Pats in Voice Over IP Fundamental
Chapter 15
Chapter 16
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Group Projects
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Practical exposure to
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VoIP systems
VoIP engineering processes
Modeling and design
Industry trends
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Group Projects – use cases
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Useful Tips
 Read
whenever you get a chance -> it will help
you build knowledgebase and confidence and it
will keep you well informed
 School
is your investment -> make sure you
take advantage of it
 It
is about how your position yourself once you
learn those skills -> it is good to know about it
even it is not always used!
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