Peer-peer calling service. Requires SIP adaptor and phone.

Peer to peer internet voice service. Requires PC for both callers.

Offers flat-rate unlimited calling within USA & Canada. Uses analog telephone handsets via broadband telephone adapter.

Canadian based provider of PC-to-phone and IP phone services and hardware.

Use dial-up and talk everywhere with our VoIP service

VoIP wholesale international termination services provider.

VoIP provider offering residential and business plans.

Residential and enterprise VoIP plans plus gateways, gatekeeper and billing software.

Free VoIP resources, including online bandwidth calculators, white papers, books, a directory and a forum.

VoIP service offering free and paid plans. Some plans require phone adapter or USB phone with an Internet-connected computer.

VoIP service offering phone-to-phone with device. Various features and calling plans.

Information exchange for VoIP partners offering minutes termination and origination, as well as hardware and software trade.

Voice-over-IP news, supplier directory and chatrooms for discussing related industry topics.

B2B VoIP exchange platform for carriers to buy/sell excess capacity on VoIP networks covering call termination in 250+ countries. No-fee membership required.

Provides voice over internet local dial-tone service. No PC required. Uses analog telephone with broadband telephone adapter.

US provider of broadband internet phone service and voice over IP (VoIP) solutions.