Internet Telephony

Subsections

VoIP Troubleshooter, including the Open Speech Repository
GetVoIP comparison site
VoIP price comparison
VoIP bandwidth calculator (JavaScript)
IP Telephony Bandwidth Calculator, with codec samples
Regulatory issues relating to IP telephony, ITU, including (outdated) list of countries where Internet telephony is prohibited
IP xStream is an ongoing market research study conducted by Gecko Research and Publishing. It provides the Internet community and telecommunications industry with free, easily accessible, in-depth market intelligence and news centered around the IP telephony/fax industry and related technologies.

(Part of the above material was contributed by Ley Christopher.)

ChatOverIP.com "began in the Summer of 1999 as two visionaries in the XoIP Industry decided to host a Chat featuring industry experts in their field. That initial Chat and the follow-up chats were so well received that a web site was desiged to house and host the chats and to further provide LIVE IP telephony news to companies and customers of XoIP."
SPIT prevention: preventing spam over Internet telephony
"A horizontal leap forward", MCI public policy paper, 2004.