|
|
Department for Electrical and Communications Engineering | Networking Laboratory |
Starting with a review of the basics of IP-based multimedia communications, we will explore the details of media announcements (SAP, SDP), Internet Media Guides (IMG), media streaming (RTSP), and as the focus of the Session Initiation Protocol (SIP) as defined in RFC 3261 and may related documents. We will discuss concepts, protocol details, the concepts for SIP extensions, present SIP building blocks, and the various approaches to SIP-based service creation. Specific application scenarios to be discussed include telephony as well as instant messaging and personal presence. We will also address security and NAT/firewalls traversal. Finally, system design aspects (for endpoints as well as for infrastructures) will be investigated.
The course will combine lectures with practical coding assignments. The latter are meant to improve familiarity with protocol operation and implementation in a few selected areas. Coding assignments are to be done in small groups of two or three students. Practical assignments can be done as a follow-up on this course.
For questions concerning the course, please use the Newsgroup opinnot.sahko.s-38.tietoverkkotekniikka or send mail to
The regular lectures and exercises will be held in the second period:
Tuesday, 8-10 (S1), Wednesday, 14-16 (S1), and
Thursday 10-12 (S4).
The next exam dates are 20.12.2007 Thursday 13-16 (S5) and 10.03.2008 Monday 9-12 (S5). Don't forget to REGISTER
The lectures, exercises, and the exam will in English language.
To pass the course, the two coding assignments must be completed and the written exam must be passed.
The final grade will consider both on the written exam (about 70%) and the assignments (about 30%). To pass the course, 50% of the points in the assignments and 50% of the points in the exam must be achieved!
The final review date for the assignments will be announced later. Please complete your assignments and email them beforehand.
| Week | Tuesday | Wednesday | Thursday |
|---|---|---|---|
| 38 (17.9.-21.9.) | Short introduction |
Network programming: C and Network programming: Java Assignment 1 (pre-release) |
|
| 44 (29.10.-2.11.) |
Introduction and Overview
Packet MM basics |
||
| 45 (5.11.-9.11.) |
Network programming (recap)
Assignment 1 (repeat) |
RTP/RTCP
RTP Extensions Payload formats |
Session descriptions (SDP)
Session announcements (SAP) Media and Program Guides |
| 46 (12.11.-16.11.) |
Internet media streaming architectures
RTSP Multicast streaming |
Peer-to-peer background
Peer-to-peer streaming |
Speech synthesis and control
Introduction to SIP |
| 47 (19.11.-23.11.) |
SIP architecture(s)
Basic session setup and teardown |
Registration and service location
Peer-to-peer SIP |
Security for IP-based Multimedia I:
Signaling security |
| 48 (26.10.-30.11.) |
Security for IP-based Multimedia II:
Media security |
NAT and Firewall Traversal |
SIP service creation:
Architectures and interfaces |
| 49 (3.12.-7.12.) |
SIP for presence and instant messaging
Related protocols: Jabber, skype |
Assignment 2 | Independence day |
| 50 (10.12.-14.12.) |
SIP for telephony
Multimedia conferencing with SIP |
SIP deployment aspects I:
Session policies Emergency calls, SPAM/SPIT |
SIP deployment aspects II
Device management Exam hints |
| 51 (17.12.-21.12.) | Exam |
The assignments will have deadlines assigned which are indicative or hard (as will be indicated).
Please return the assignments prior to the deadline by sending an email with a tar or zip file containing the binary and source code. All the assigment submission must be send to Jegadish Devadoss <jegadish (at) netlab.tkk.fi> and Mikko Kiiski <makiiski (at) netlab.tkk.fi>Description and slides to come.
Related resources to come.
Description and slides to come.
Assignment resources The lecture material (slides) will be available in
digital format (PDF) from this web page.
While there are many books on SIP and related standards,
only few of them turn out to be really useful (rather than,
e.g. outdated). The book by Gonzalo Camarillo provides a very good
overview (but also discusses the 3GPP Internet Multimedia Subsystem
(IMS) which we do not address in this course).
For IP-based multimedia communications in general, there are not even
many books (worth mentioning). A notable exception is: Colin Perkins,
"RTP: Audio and Video for the Internet", Addison-Wesley, June 2003,
ISBN 0-672-32249-8 (which, however, only covers a fraction of the
course).
Therefore, rather than relying on books, we recommend to stick with
primary material — in this case: RFCs and Internet Drafts
— to which we will point for the individual lectures as far as
possible. For parts of the coding assignments, it is essential read
through pieces of the original documentation to properly interpret
packet formats or protocol processing rules.
The following RFCs are likely to be useful (not just) for assignments
2 and 3. The Internet Drafts on RTSP and SDP just provide a view on
the latest developments but today's client and server implementations
will most likely stick to the respective RFCs.
Course Material
Finally,
some useful links to the various (IETF) working groups