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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...

Broadvox provides SIP Trunking solutions for businesses with existing IP PBX installations as well as those that are seeking to establish a platform for Voice over Internet Protocol (VoIP) communications over their existing legacy TDM system.

Find unified communications (UC) news, advice and research for IT professionals and learn about strategies for UC deployment, integration and management.

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

YouTube is a place to discover, watch, upload and share videos.

Cisco (NASDAQ: CSCO) is the worldwide leader in networking that transforms how people connect, communicate and collaborate.

As the global leader in Application Delivery Networking, F5 Networks is focused on ensuring the secure, reliable, and fast delivery of applications.

Internet Telephony

Logic Voice offers the services of a Local Business Phone Service Provider with Business Phone Services for all your business needs. Unlimited local and long distance calling for $49.99/month. Toll free service for only 1.9 cents per minute

VOIP telephony with Asterisk