HEATKEYS

Business VoIP - OnSIP Hosted PBX and Hosted VoIP Trunking. No per user license fees makes our Hosted PBX service the most economical for your business.

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.

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...

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

Free Zoiper softphone, Web Phone & SDK for windows, mac, linux & mobile phones. Get your own OEM branded and customized softphone. Free Download

VOP Nano : Free SIP softphone

The Award Winning Business Phone Service over the Internet. OnSIP business VoIP service is a hosted pbx system that allows you to streamline your business communications. There’s no phone company hassle, no phone system to buy or manage, no contracts

Business Communications Solution is Texas leader in Voice over IP Business Phone Systems. Including Networking, VoIP, Data/Voice Cabling, Auto Phone Attendants, Voice Mail Systems, Music on Hold to name a few. BCS services most Texas cities including...

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...

Avaya, a global leader in business communications, provides solutions directly and through its channel partners to leading enterprises around the world.