E164.org lists regular PSTN telephone numbers and maps them to VoIP (Voice over IP) addresses such as those provided by Free World Dialup, Broadband Phone Providers like Vonage, or even people who run their own Asterisk system
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Digium is an Open Source telecommunications supplier. We are the primary corporate sponsor of the Asterisk Open Source PBX and offer a variety of specifically designed low and high density telephony hardware and professional services relate...
An open source communications platform, Asterisk® is a complete IP PBX in software. It runs on a wide variety of operating systems including Linux, Mac OS X, OpenBSD, FreeBSD and Sun Solaris and provides all of the features you would expect...
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