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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...

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...

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soft-switch.org provides DSP and signaling modules for free telephony

Award-winning fax servers & software. 3,000+ Enterprise customers. Includes Windows fax servers, FoIP, virtual & internet faxing, plus advanced fax routing, management and workflow.

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OpenText is the global leader in fax software with RightFax, and has sold over 100,000 fax servers worldwide. Other offerings include certified document delivery, hosted fax services, fax appliances, and document management software.

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

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