Internet Phone

DSG Technology
Offers Internet telephony devices. Includes information about products and services.
http://www.dsgafrica.com/

Go2Call.com
Internet phone service offering low-cost PC-to-phone calls and international calling plans.
http://www.go2call.com

My Phone Free
Offers Voice over Internet phones. Includes details of products.
http://www.myphonefree.com/

Net2Phone
Voice calls from your PC to any phone.
http://www.net2phone.com