Can FusionPBX act as an SBC?

No, FusionPBX is not an SBC. It’s a PBX GUI on top of FreeSWITCH and lacks key SBC features like SIP normalization, NAT traversal, and TLS/SRTP termination.

How do I configure SIP trunking with SBC for FusionPBX?

To configure FusionPBX SIP trunking with an SBC, align SIP profiles, normalize headers, enable NAT traversal, and route calls using dialplan logic or DID rules.

What’s the difference between SBC and PBX in VoIP systems?

An SBC (Session Border Controller) handles SIP signaling at the network edge (securing and routing traffic), while a PBX, like FusionPBX, manages internal call logic, extensions, and IVRs.

Do I need an SBC if I'm using FusionPBX with FreeSWITCH?

Yes. Even though FusionPBX uses FreeSWITCH, you still need an SBC for secure SIP trunking, media traversal, and interoperability with external carriers or clients.

How does FusionPBX SBC integration improve SIP call quality?

SBC integration with FusionPBX reduces one-way audio, enforces codec negotiation, and provides stable SIP session control, leading to better call reliability and quality.