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

Virtual PBX small business phone system: The hosted PBX with Fortune 500 features and low up-front costs now offers business VoIP

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...

IP PBX phone systems from FortiVoice help small businesses improve image, control costs and stay connected anywhere. Our affordable, scalable telephone systems fit 1 to 400 users per location, FortiVoice PBX and IP PBX telephone systems are VoIP-ena...

Ringio provides a small business phone system with Virtual PBX features at an affordable price. Instant activation of your free trial.

Get your 800 numbers, toll free numbers, virtual pbx, internet fax and virtual phone system setup online in minutes with Ring Central, the industry leader in hosted business phone services.

Business VoIP from Vocalocity

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

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

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

FREE VoIP Local, Long Distance & International Calling. VoIP Digital Telephone Service.