I wrote an article for O’Reilly’s Emerging Telephony site called Telecom Terms and Concepts. It’s all about how the existing phone system and VoIP works, how they’re the same, and how they’re different.

On another voice related note, John Lange has started up the Canadian Association of Voice over IP Providers, a sort of lobby/working group for Canadian ITSPs. The goal is to present an independent perspective on VoIP regulatory issues to the Canadian Radio and Telecommunications Committee (CRTC) and to work in cooperation with Local Exchange Carriers (LECs) to ensure interoperability between VoIP networks and the Public Switched Telephone Network (PSTN).