RingCentral is a publicly traded provider of cloud-based phone systems for businesses headquartered in California. It offers a unique cloud based PBX system for businesses whose features include multiple extensions; call control; Outlook, Salesforce, Google Docs, DropBox and Box integration; SMS; video conferencing and web conferencing; fax; auto-receptionist; call logs; and rule-based call routing and answering. RingCentral Professional is a suite offered by it that provides a universal telephone number, voice mail, dial-by-name directory, call-forwarding, and other features through a smartphone app on iPhone and Android devices. Its RingCentral Fax allows users to send and receive faxes through the Internet without a fax machine and it has integrations with Dropbox, Box, and Google Docs.
To ensure the highest level of voice quality, it is recommended that you use an additional 80-100 kbps of bandwidth per active phone over your current data consumption. You can find more information regarding your VirtualPBX readiness here.V.P.S. (U.S.A) VirtualPBX