These are the lecture slides and notes from a general introduction to data communications module last taught in 2009-2010.

Feel free to use them as you like but please acknowledge the source. You can download everything as a zip file or view the individual ones below:

1. Channel Capacity
2. Transmitting Informatiom
3. Sharing Networks *
4. Sharing the Medium
5. Handling Errors
6. Introduction to Queuing Theory
7. Modelling and APIs
8. Example technologies
9. Local Interconnection
10. Internet Architecture
11. Internet Transport
12. Internet Deployment
13. Internet Deployment - Routing Supplement
14. Application Architecture
15. Application Examples
16. QoS Issues

The "Sharing Networks" notes include some animations. To make these work, download the animations and unzip to a sub-directory calls "Animations".

1. There is a concise (24 page!) description of the Internet architecture which should be good background reading.
2. And if you want to know what was really the origin of the Internet, OSI and all that layering stuff ...