Driansh Softtech

VoIP Development

VoIP software development company for custom telecom products

We build custom VoIP platforms for telecom providers and businesses. Softswitches, hosted PBX, call centers and WebRTC apps, on open-source stacks you fully own.
Talk to our VoIP teamSee what we build

Free consultation with our engineers

Custom VoIP development, end to end

As a VoIP software development company, we design and build the voice systems your business sells or depends on. That covers SIP signaling, media servers, billing, admin portals and the apps your users call from. We work with telecom operators, VoIP providers and software companies adding voice to their products.

You get one team for the whole stack. We pick the right open-source engine for your traffic and features, build what is missing, and stay on for support after launch.

Technology we work with

  • FreeSWITCH
  • Asterisk
  • Kamailio
  • OpenSIPS
  • WebRTC
  • SIP.js
  • RTPengine
  • Node.js
  • React
  • MySQL
  • PostgreSQL

What we offer

VoIP development services we offer

Custom VoIP software

Build a voice product around your business model instead of bending an off-the-shelf system to fit.

SIP server engineering

Set up Kamailio or OpenSIPS for routing, load balancing and security so your core scales with traffic.

Media & call logic

Program IVRs, queues, recording and conferencing on FreeSWITCH or Asterisk to match your call flows.

Softphones & web phones

Give users browser, desktop and mobile calling apps that register to your own SIP platform.

Billing & integrations

Connect switching to rating, invoicing, CRMs and helpdesks so call data reaches every system you use.

VoIP consulting & support

Get help with architecture, stack choice, audits and ongoing maintenance for new or existing platforms.

Planning a VoIP product?

Share your idea or current setup. Our VoIP team will review it and suggest a stack and plan.
Talk to our VoIP team

What we build

VoIP solutions we build

Class 4 softswitch

Wholesale routing, least-cost routing and carrier management.
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Class 5 softswitch

Retail calling with hosted PBX features for service providers.
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Multi-tenant IP PBX

Hosted PBX you can brand and resell to business customers.
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Call center solution

Inbound and outbound dialing, queues, recording and reporting.
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VoIP billing

Rating, invoicing and prepaid or postpaid account management.
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Unified communications

Voice, video, chat and presence in a single platform.
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Why Driansh

Why teams choose Driansh for VoIP development

Every layer covered

Signaling, media, billing, portals and apps come from one team, so nothing falls between vendors.

You own the code

We hand over source code and documentation, so you can run or extend the platform without us.

Open-source first

We build on proven open-source engines, which keeps licence costs down and avoids vendor lock-in.

Support after launch

We monitor, patch and extend your platform as your traffic and feature list grow.

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

Planning a VoIP product?

Share your idea or current setup. Our VoIP team will review it and suggest a stack and plan.

Tell us about your project

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

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