Presentation given at the Linux.Conf.Au 2006 Sysadmin Miniconf, held in Dunedin, New Zealand, as part of the Linux.Conf.Au 2006 conference, in January 2006. No recordings of this presentation still exist.
Abstract
An overview of Voice over IP (VoIP) technology from a system administrator's point of view. The talk will cover how VoIP works (focusing on SIP and H.323), issues with mixing VoIP with firewalls and/or NAT, and include a brief survey of open source tools for working with VoIP and debugging VoIP issues.