Question: how ip pbx system works?
Answer: IP PBX: How an IP PBX / VoIP Phone System Works. A VoIP Phone System / IP PBX system consists of one or more SIP phones / VoIP phones, an IP PBX server and optionally includes a VoIP Gateway. ... Through that network, Computers running SIP clients such as the 3CX softphones, and IP Phones connect directly to the PBX.