VoIP.org.uk UK resource with the emphasis on small businesses and home users. Includes news, reviews, and forums. http://www.voip.org.uk/ Voip.org.uk~Site InfoWhoisTrace RouteRBL Check
VoIP Wiki A wiki that covers VoIP software, hardware, service providers, reviews, configurations, and standards. http://www.voip-info.org/wiki/ Voip-info.org~Site InfoWhoisTrace RouteRBL Check
IP Telephony Literature Survey A literature survey covering architectural, protocol, and quality requirements for deploying an IP Telephony service. http://www.cs.berkeley.edu/~mccaesar/research/iptel_litsurv.html Berkeley.edu~Site InfoWhoisTrace RouteRBL Check