This definitive compendium of design patterns in communication software, gathered together by Linda Rising, includes contributions by James O. Coplien, Douglas C. Schmidt, Robert Hanmer, Greg Utas, Just van den Broecke, Don Olson, Carlos O'Ryan, Christopher D. Gill, and other experts from the patterns field. Engineers and other professionals working in the field of communications software development will find this unique reference extremely useful.
Presents design patterns applied to common problems unique to communications. Most patterns are aggregations of common patterns. Some patterns are new and novel. Many are variations of others. Some of the variations are slight, and not that noteworthy.
Overall it is a good to collection. It's nice to see examples of patterns used together to create systems. Using a more consistent book organization structure would help in following along.