What Is IP PBX?
IP PBX is a PBX that communicates over IP networks rather than TDM and copper, primarily using SIP. It enables full VoIP feature sets.
Definition
An IP PBX manages calls over IP networks. All extensions are SIP endpoints, IP phones, computer softphones, or mobile apps. Examples: Yeastar P-Series, 3CX, Asterisk, FreePBX.
Usage
Organizations install IP PBX on-premise or on a server / VM and connect SIP Trunks for outbound calling. Mobile apps support remote workers.
Related Concepts
IP PBX differs from Cloud PBX in that Cloud PBX runs on the provider's infrastructure, while IP PBX usually refers to a customer-owned server.
Frequently Asked Questions
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