Zero, looking ahead, I don't believe that asterisk support stable LDAP for SIP users yet. I was envisaging a single register/change password PHP page which would update all the revelant databases. Clunky, yes, but it should work and be fairly easy to extend to other services. Especially if you want to start building custom services on the site, without the overhead of handling an LDAP server.

Sharing registration between jablet and ldug, this might be the simpler route too. We would either need to lock down registration via a jabber client, or make registration via that route automatically create the other accounts.

I've not explored in depth, but I believe that openfire uses a standard database for storing all it's information, so it should be fairly easy to create users and query user status for displaying on the site, if so desired. I already have both of these services running at home, so that's not a problem.

If this is the route you want to start going down, I can look into it and probably set up something basic web-wise on my home server for registering with openfire and asterisk at the same time, and for querying user status?