Good, Introductory Resources on IMS
By MortazaviBlog on Aug 29, 2005
I don't usually stay up this late (or get up this early, depending on one's perspective) but a Sun friend from China who is also a grduate student there asks about good source material to become familiar with IP Multi-media Subsystem (IMS).
There are several very good resources. To begin with, I have already mentioned one book on my weblog by Camarillo. That's a good one to read for a researcher in the field. It points to all relevant IETF material.
Another source of good introductory information on a large diversity of telecommunications technologies and more is Ericsson's Telecom Report. Whever I have time, I've enjoyed reviewing their online material (including the video reports) and was at one point a subscriber to the print edition of their journal. Most of its authors are associated with Ericsson, which is one of the oldest telecommunications firms in the world.
Lucent, Ericsson, Siemens and Nokia have all published very good white papers on IMS and related technologies. There may be some discrepancies on vocabulary due to product branding but all of these are good sources to start with.
Finally, you can access academic paper through corporate or academic subscriptions to IEEE and ACM journals through their digital libraries. Just do a search on SIP, IMS and IP Multmedia Subsystem on these electronic libraries (and I'm sure similar resources might exist on your university or corporate library) in order to get to the more recent academic publishings in this domain. These are good to read and glance at random (as food for thought) and select for further study and investigation depending on the course of your work and interest.