SERVICE

FusionPBX Development

Turn FusionPBX into a product: tenant domains, provisioning, custom apps and a FreeSWITCH core that stays healthy.

Domains / tenantsProvisioningCustom appsWebRTC extensionsSIP tracesHosted PBX

FusionPBX is the fastest path from a FreeSWITCH core to a multi-tenant hosted PBX — if you treat domains, gateways and dialplan as a data model, not a pile of GUI clicks. UnifiedPBX.in customizes FusionPBX for operators who want to resell seats, and for product teams who need the GUI plus an API they control.

Reference architecture

FusionPBX + FreeSWITCH tenancy
Reseller / adminSuperadmin domain
Tenant adminsPer-domain users
End users / WebRTCExtensions & devices
FusionPBXPostgres · Lua · provisioning · GUI / API
FreeSWITCHSofia profiles · XML from FusionPBX
CarriersPer-tenant or shared trunks
Recordings / CDRIsolated paths
Your SaaS portalBilling & branding
Never let two tenants share a recording directory, ACL or outbound gateway without an explicit design.

What we customize

Tenant model

Domains, groups, permissions, destination selectors and outbound routes that cannot cross tenants.

Provisioning

Phone/softphone templates, hot-desking and device inventory that support staff actually use.

WebRTC extensions

Browser phones that survive corporate NAT — the usual FusionPBX pain point.

Custom apps & reports

Queues, wallboards, recording access policies and CDR exports for finance.

Stabilization

SIP registration loops, email/voicemail, fax, and “it worked until we added the second carrier.”

Product wrap

White-label, API sync to your billing, and runbooks so you are not the only person who can restore a domain.

Search intent we write for

People arriving from FusionPBX developer, FusionPBX one-way audio, multi-tenant FusionPBX and FusionPBX vs 3CX / VitalPBX need diagrams and failure modes, not a feature list copied from the project wiki. That is what this page — and the engagement — is built around.

FAQ

Questions buyers and AI search engines ask

It is an excellent admin plane on FreeSWITCH. A commercial product still needs branding, billing, tenant self-service, support tooling and stricter isolation than a default install.

Yes. That class of bug is almost never “just NAT.” We check ext-rtp-ip, ACL, wss, ICE/TURN, codec offer and whether media is hairpinning through the wrong interface.

Yes — additional PHP apps, dialplan snippets, provisioning templates and APIs that sit beside the stock domains/extensions/gateways model without forking the project blindly.

Yes. FusionPBX remains the voice admin; your portal becomes the customer OS (users, billing, CRM). We define which system is source of truth for each object.

Need this built?

Send the current architecture, call volume, carriers and the workflow you need to automate or productize. Discovery can start from a broken PBX or a blank product brief.

Discuss Your Project hello@unifiedpbx.in
Related
FreeSWITCH core engineering →Multi-tenant PBX solution →Cloud PBX →How to build a multi-tenant cloud PBX →

Architecture first. Then production.

A practical technical discussion focused on SIP, media, tenants, AI and the delivery path — not a generic sales deck.