Since asking about Asterisk back in July, I've found that openpbx (now named CallWeaver) seems to be the preferred fork: <http://www.callweaver.org/> <http://www.voip-info.org/wiki/view/OpenPBX.org%20FAQ> There's an RPM for RC2 in Fedora Development (AKA Rawhide) but it hasn't been updated in awhile. (The latest upstream release is RC5.)