In doing some final checks on the forthcoming IMS Poster follow-up to the book, I noticed there were several inconsistencies between our label interfaces in the Chapter 3 graphics and tables.
Rather than read thought the dozens of pages of 3GPP specs to check I did a quick check on a few of them and came across the latest Wikipedia entry for IMS here: http://en.wikipedia.org/wiki/IP_Multimedia_Subsystem
This is a great entry that I would recommend for use as a reference. It does not contain references to all of the R7 architecture (i.e. A-BGF is missing), but it looks like it covers R6 fairly well. In addition, all of the hotlinks make navaging the 3GPP specs a lot easier.
Look for some book corrections soon.
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