Driansh Softtech

Open Source Development

FusionPBX development services for hosted PBX providers

We install, customize and scale FusionPBX for providers and businesses, adding the features, branding and integrations your multi-tenant phone system is missing.
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Free consultation with our engineers

What we do with FusionPBX

FusionPBX development lets you run a branded, multi-tenant phone system on open-source software instead of paying per-seat licences. We set up FusionPBX on FreeSWITCH, build the features it lacks and tune it for the number of tenants you plan to serve.

We work with hosted PBX providers, ITSPs and IT teams that already run FusionPBX, or want to launch on it. Because we also write FreeSWITCH code, fixes can go below the web interface when needed.

Technology we work with

  • FusionPBX
  • FreeSWITCH
  • PHP
  • PostgreSQL
  • Lua
  • SIP
  • WebRTC
  • Linux
  • Nginx
  • Redis

What we offer

FusionPBX development services we offer

Installation & setup

Install and configure FusionPBX for your call volume, tenants and carriers, so you start on a clean base.

Custom feature development

Build modules, apps and dialplan logic FusionPBX doesn't include, so you can offer what competitors can't.

White-label themes

Replace the default look with your logo, colours and portal layout, so customers see your brand.

Cluster & HA setup

Run FusionPBX across several servers with shared storage and failover, so one outage doesn't stop calls.

API & CRM integration

Connect FusionPBX to CRMs, billing, payment gateways and your own apps through its APIs and database.

Training & support

Train your admins, fix bugs and apply upgrades, so your team can run the platform with confidence.

Running or planning a FusionPBX platform?

Tell us what you need to add, fix or scale. A FusionPBX engineer will review it and suggest next steps.
Talk to a FusionPBX engineer

What we build

Platforms we build on FusionPBX

Multi-tenant IP PBX

A hosted PBX you can resell to many business customers under your brand.
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Class 5 softswitch

Retail switching with extensions, voicemail and call features for service providers.
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VoIP billing

Rating, invoicing and prepaid balances tied to each FusionPBX tenant.
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Call center software

Queues, agents, recording and reports built on top of your PBX.
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Enterprise VoIP

Private, multi-site phone systems for companies that host their own voice.
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Why Driansh

Why choose Driansh for FusionPBX

FreeSWITCH depth

We work below the FusionPBX interface too, so hard problems in media and routing get solved properly.

You own the code

Custom modules, themes and scripts are handed over with documentation, so you stay vendor-independent.

Upgrade-safe changes

We keep custom work separate from core files, so future FusionPBX releases are easier to apply.

Deploy where you want

We run FusionPBX on your own servers or in the cloud provider you already use.

How we work

From idea to live platform in four steps

  1. 01

    Discover

    We review your requirements, traffic and existing stack, then agree scope, milestones and cost.

  2. 02

    Design

    We plan the architecture, integrations and failover so the platform fits your growth plans.

  3. 03

    Build & test

    We develop in short sprints with regular demos, then load-test and QA before go-live.

  4. 04

    Deploy & support

    We launch on your servers or cloud and stay on for monitoring, fixes and upgrades.

Frequently asked questions

Get in touch

Running or planning a FusionPBX platform?

Tell us what you need to add, fix or scale. A FusionPBX engineer will review it and suggest next steps.

Tell us about your project

Share a few details and the right engineer will get back to you.

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