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VirtualPBX is particularly recommended for small to medium-sized businesses that require a flexible and scalable telecommunication solution. It is also suitable for remote teams and organizations looking for a customizable and feature-rich virtual phone system.
Mitel - Business Communications and Collaboration
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
VoipSwitch - VoipSwitch provides complete VoIP and unified communications solutions.
XO Hosted PBX - Hosted PBX is a scalable UC solution that uses cloud technology to integrate HD voice & data services, mobility, along with advanced calling
VoIP.ms - VoIP.ms is a VoIP origination and termination tool.
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...