Hi Guy – By “network” I’m thinking that you are wondering if CBOX needs to run on a multisite WP installation? If that is your concern – no, you can run CBOX on a single installation of WordPress.
If you are looking for your community to create and join groups, discuss issues, share and collaborate on docs, create wiki pages, automatically notify each other when content is posted, and optionally do much more, then CBOX might be a good fit for you. (You can selectively shut off some of these features, if you want.) If you just want a site with a discussion forum, maybe CBOX is a more complicated solution – though it would probably still work for you.