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3CX VOIP PBX - provides an easy to use, plug and play SIP - IP PABX for Windows. With a software based IP PBX you will save on PBX maintenance and halve your phone bill. Download the FREE edition today and break free from your proprietary phone syste...

Welcome to voip.about.com, your guide site to everything Voice Over IP, also called VoIP, IP Telephony or Internet Telephony. Learn how to make free or cheap local and international calls using your PC or phone. Stay updated on VoIP hows and whats, V...

VoIP Service Provider Home Phone Internet Phone Service Small Business SIP Trunk Solutions Free Cheap International Calls Virtual Number.

Phone systems to power your business. Turnkey business phone systems, IP PBX phone systems, VoIP phone systems, and Asterisk telephony software.

Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PBX, VoIP gateway, IVR and ACD.

Toll Free VOIP Termination Service Provider. Pays you back for every minute you pass over our gateway. TFSG offers carrier grade toll free termination services to small businesses, enterprises and carriers in the U.S. and Canada

XO Communications provides cutting edge Business Telecommunications technology. Learn more about Business Telecommunications from XO Communications.

VOIP information, troubleshooting and tutorials to correct faxing, voip quality issues (echo), and one-way audio problems. How to best configure your VoIP connection.

AVOXI virtual call center solutions provide virtual call center products like SIP trunking and VoIP gateway solutions, with international toll-free numbers.