Billion PBX - new generation phone system working in IP-networks using SIP protocol. Billion PBX can be installed on usual office computer to create fully functional phone system over the LAN. Users will be able to make not only voice calls but also will have a whole range of additional features like call forwarding, voicemail, callback and many others. Installation and configuration simplicity, reliability, low hardware requirements, popular operating systems support, flexible pricing policy.
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