I'd like to put my hand up to be part of the VoIP SIG. After mentioning this in IRC, I've also had two other people contact me privately (puzzled and JHogarth) with their interest too. Currently we (FreePBX) build 'FreePBX Distro', which is a up-to-date CentOS distro, with a couple of known-broken packages upgraded (drbd, pacemaker) or replaced (asterisk). --Rob