CryptoVoip Logo
18+ Years · FreeSWITCH · OpenSIPS · WebRTC

The Deepest VoIP & WebRTC Expertise You'll Find

We've been building real-time communication infrastructure since the early SIP days. Customise, deploy, scale, or build from scratch — every layer of the stack, done right.

FreeSWITCH · OpenSIPS · Kamailio · WebRTC · RTPEngine · Linphone · AI over SIP

18+
Years in VoIP & WebRTC
Since the early SIP days
Millions
Concurrent sessions architected
Fault-tolerant at scale
Full Stack
SIP · RTP · WebRTC · AI
Every layer of the stack
Global
Deployments across industries
Telecom · Defence · Finance
What We Do

Every VoIP & WebRTC Service Under One Roof

Whether you're starting from zero or optimising a platform that serves millions of calls — we've done it before and we'll do it for you.

Custom Development

We build bespoke VoIP & WebRTC applications from the ground up.

Whether you need a carrier-grade SIP platform, a white-label softphone, a WebRTC video conferencing suite, or a custom contact centre — we design and develop it to your exact specification.

  • Custom FreeSWITCH / OpenSIPS modules and ESL applications
  • WebRTC browser and native apps (React, iOS, Android)
  • SIP softphones with branding, push notifications, and E2E encryption
  • Carrier-grade wholesale VoIP platforms (billing, routing, LCR)
  • Click-to-call and embedded communication widgets
  • Custom IVR trees, ACD queues, and call-flow logic
Why Us for This
  • 18+ years of hands-on production deployments
  • We've debugged every SIP edge case imaginable
  • Open-source-first — no black-box vendor dependency
  • AI-ready architecture built in from day one
  • Full post-delivery support and documentation
Technology

The Full Technology Stack

We work across every layer — from SIP proxies and media engines to mobile SDKs, monitoring, and AI integration.

SIP & VoIP Platforms
FreeSWITCHOpenSIPSKamailioAsteriskYealinkCisco UCM
WebRTC Infrastructure
Janus GatewaymediasoupPion (Go)LiveKitCoturn / STUNDaily.co
Media & Routing
RTPEngineSRTP / DTLSICE / TURNOpus / G.711 / G.729WebRTC-SIP GWSBC (Session Border)
Mobile SDKs
Linphone SDK (iOS/Android)Flexisip ServerPJSIPWebRTC Native SDKReact Native SIPCapacitor / Ionic SIP
Monitoring & Observability
Homer SIP CaptureGrafana / PrometheusKibana / ELKCDR AnalyticsReal-time DashboardsAlertManager
AI & Automation
Pipecat over SIP/WebRTCReal-time TranscriptionAI IVR / Voice BotsSIP AI BridgesLLM on-call routingWhisper ASR Integration
Capabilities

We Build All of It

From a single feature addition to a complete global telecom platform — no scope is too narrow or too large.

SIP Trunking & Routing

Design and deploy SIP trunks, LCR, failover routing, and carrier interconnects for any scale.

Video Conferencing

WebRTC-based multi-party video with recording, screen share, and custom branding.

Contact Centre Platforms

ACD, IVR, agent dashboards, call recording, and real-time wallboards built to spec.

Encrypted Communications

SIP TLS, SRTP, DTLS-SRTP, and E2EE for defence, banking, and regulated industries.

WebRTC Applications

Browser and mobile WebRTC apps — click-to-call, live support, virtual classrooms.

CDR & Billing Systems

Custom CDR processing, real-time billing engines, prepaid/postpaid management.

PBX & UCaaS Platforms

Multi-tenant PBX, hunt groups, voicemail, fax-to-email, and full UC feature sets.

Legacy Migration

Asterisk to FreeSWITCH, on-prem to cloud, or proprietary PBX to open-source — zero downtime.

Industries

Deployed Across Every Vertical

📡

Telecommunications

Wholesale VoIP platforms, carrier interconnects, Class 4/5 switches, and UCaaS products.

🏢

Enterprise

On-premise or cloud PBX, UC platforms, contact centres, and CRM-integrated telephony.

🪖

Defence & Government

Air-gapped SIP networks, encrypted voice, captive-network comms, and tactical deployments.

🏥

Healthcare

HIPAA-compliant teleconsultation, on-premise video, patient call routing, and clinical integration.

🏦

BFSI

Compliant call recording, fraud detection over voice, IVR for banking, and secure conferencing.

🎓

EdTech

WebRTC classrooms, live tutoring platforms, multi-party video SDKs, and attendance tracking.

Why Us

Not a Reseller. Not a Generalist.
Deep Domain Experts.

We've been in the trenches of SIP and WebRTC since the protocols were young. We understand the failure modes, the scaling limits, the codec negotiation bugs, the NAT traversal nightmares, and the carrier interconnect quirks that take consultants years to accumulate. That knowledge ships with every project.

  • Open-source first
    No proprietary black boxes. You own and understand every part of your stack.
  • AI-native thinking
    We design VoIP infrastructure with AI integration as a first-class concern — not an afterthought.
  • End-to-end ownership
    From network design to UI to monitoring — one team, one point of accountability.
  • On-premise capability
    We've built for air-gapped defence networks. No one knows offline deployment better.
  • 20+ years, still shipping
    We're not retired consultants — we're actively building production systems today.
Engagement Models
Project-Based
Fixed-scope delivery: design → build → test → deploy → handover with documentation.
Consulting & Audit
One-time or retainer-based: architecture review, cost reduction analysis, security audit.
Dedicated Team
Embed our engineers into your team long-term for ongoing development and platform ownership.
Proof of Concept
Fast 2–4 week PoC to validate your idea before committing to full development budget.

Let's Build Your Communication Infrastructure

Share your requirements — existing platform, target scale, pain points — and we'll come back with a clear architecture plan and honest estimate. No sales fluff.

✓ FreeSWITCH · OpenSIPS · Kamailio✓ WebRTC · Janus · mediasoup✓ AI over SIP · Pipecat✓ On-premise & cloud