FREEPBX 17 READY

Flexible UK trunks for FreePBX.

Connect FreePBX using PJSIP or IAX2, with provider settings documented for administrators who manage their own PBX.

PJSIP registration
IAX2 trunks
Inbound DDI routing
Caller-ID configuration
£2 per number; channels separate

CHOOSE YOUR PROTOCOL

PJSIP or IAX2.

The FreePBX GUI can configure either method without a proprietary connector.

PJSIP registration

Configure a modern PJSIP trunk using the registrar and credentials shown in your portal.

View PJSIP guide

IAX2

Use FreePBX's IAX2 trunk type for a single-protocol connection to Sipflex.

View IAX2 guide

CURRENT DOCUMENTATION

Settings that match the current platform.

Guides are organised around FreePBX 17 and current PJSIP terminology, with legacy material clearly separated.

Trunk and outbound route settings
Inbound route and DDI behaviour
Codec and DTMF options
NAT and firewall checklist
Registration status checks

Scope of support

We can help confirm Sipflex credentials, registration status and provider-side routing. We do not configure FreePBX modules, extensions, dial plans or firewalls on your behalf.

30-DAY FREE TRIAL

Connect FreePBX to Sipflex.

Start with PJSIP or IAX2 and test the service for 30 days.

Start free trial

No card required.