TSM350 Class Mechanics• Instructor bio, contact info, non-textbook
• Grading & Fine Dining Policy– One Lab Quizzes (replaces lab reports): 10% each– Midterm and Final are 30% each– Lab Final Project (Pitch) is 30% - something new, you guys are the guinea pigs– Teacher Evaluation is 10% – Subject to change: Instructor reserves the right to modify this
• Do you really want to take this class? Look at previous student evaluations (on the web site).
• Pre-requisites, Class Philosophy: “At the end of this class, you should be able to ….”
• Labs: – 1st lab: “here’s something you can do at home”– 2nd lab (n-lab): Need to resolve time for labs. (2 lab sessions during the day, 1at night. 2 person
teams)– Final Lab Project: (3-4 person teams. Propose something interesting and doable. 1st
Proposal Due Oct 10. Final proposal from teams due October 27. Examples:• Get ACME SBC up and running with simple configuration• Attach GoogleVoice Trunk to Asterisk Server• Get an IMS client (with video) running against IMS server. Or SIP client (with video) running against
Asterisk Server• Write a Simple Asterisk server side script – do something interesting (inbound call linked to server side
Prerequisites• Some familiarity with PSTN and IP Networks: basic architectures &
concepts (T1/DS3/OC48 hierarchy, edge/core routing, RIP/OSPF/BGP, IP Transit, hosting, etc.)
• Some previous exposure to UNIX & IP Protocols– telnet, ssh, perhaps vi or emacs, grep, … – DNS/BIND, DHCP, dig, netstat, etc.– Some IP debug tools (netstat, ngrep, snoop or tcdump, etc.)
• PC of some flavor (windows, mac, linux) with broadband access of some sort. Administrative access to download applications (voip client, debugging tools, etc.), ability to make calls. Laptop for the labs really helps.
• Willing to share your knowledge & experience with instructor who clearly doesn’t know it all.
• Interest and experience as a consumer & player (Dialpad, Vonage, Skype, MagicJack – the list gets longer each year - etc.)
Philosophy: “At the end of this class, you should be able to ”
• A – Configure a Cisco media gateway and open-source softswitch to handle T37 store and forward fax.
• B – Wrie a small routine to translate the MaxHop counter from a SIP header to the equivalent ISUP field, and test with a carrier
• C – Form a startup to provide ENUM to the GSM consortium. Run the service on a hacked Northeastern SUN workstation, sell the service to Orange, and retire to France.
• D – Write a cool app for the Google G1 phone, translate it so that it also runs on apple, nokia, and windows platforms, sell it to millions of people through ebay, and retire to France (after donating a portion of the profits to your friendly prof).
• E – Register your Microsoft Messenger Client with Verizon Businesss egress network, spoof the authentication process, and make $2.7B in illegal phone calls to Bangledesh.
Philosophy: “At the end of this class, you should have ..”• A broad understanding of Voice over IP / IP Telephony:
– Architecture– Protocols– Business Models
• Some detailed understanding of SIP– Call flows, protocol debugs– Client, gateway, and server configurations– SIP Security (TLS or SSL for SIP, SRTP for media)
• Some understanding of network implications– QoS/CoS on LAN and WANs– Wireless interconnections (femtocells, a little about IMS)– Firewalls, NAT, Privacy and Security
• Know what all the buzz words on the previous page mean
Text & Resources• No real textbook, use recommended books & the web.• Recommended Books:
– Internet Communications Using SIP, H. Sinnreich & A. Johnston, Wiley 06. This used to be the class textbook, but it’s out of date, and perhaps a little lightweight. I still recommend that you take a look at it.
– Securing VoIP Networks, P.Thermos & A.Takanen, Addison-Wesley 07. Very nice discussion of VoIP security, worth reading.
– WiFi Telephony, P.Chandra and D.Lide, Newwnes 2007. – IP Telephony, Hersent, Petit, and Gurle, Wiley 2006. More architecture, higher
level, less sip, some codecs. Also a little out of date.– Fixed Mobile Convergence, A.Shneyderman & A.Casati, McGraw-Hill, 08
• “... a large portion of success is derived from flexibility. It is all very well to have principles, rules of behavior concerning right and wrong. But it is quite as essential to know when to forget as when to use them.” - Alice Foote MacDougall (1867–1945)
• we are (or at least I am) driving somewhat blind here folks, so think of this schedule as a rough guide, not precise menu (although, the days for the, midterm, and final will be honored). – EE
• Schedule (e.g., default sylabus) is listed on the class web site.
