3CX Phone System is an open standard Windows-based IP PBX that provides superior features and flexibility at a far lower cost and replaces traditional PBX hardware phones. It supports popular SIP phones, VoIP providers and traditional PSTN lines. 3CX Phone System’s web-based management console makes it easy to configure, eliminating the need for expensive maintenance.
Fanvil produces intercom systems which will function on internet. It comes with a lot features like when press the call buttonn it will make actual call, so that user can easily find out who is at the door.
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