"Using IP Telephony to Bypass Local Phone Monopolies", Hello Direct, Inc. (IP telephony hardware vendor and marketer) "Internet Telephony or Circuit Switched Telephony: Which is Cheaper?", Weiss and Hwang (Telecommunications researchers, USA and Taiwan) [PDF]
"Using IP Telephony to Bypass Local Phone Monopolies", Hello Direct, Inc. (IP telephony hardware vendor and marketer)
"Internet Telephony or Circuit Switched Telephony: Which is Cheaper?", Weiss and Hwang (Telecommunications researchers, USA and Taiwan) [PDF]
"Study: Net phones threaten telcos", C|Net News (16 June 1998)
