Official Jambonz Integration Partner

Open Source.
Enterprise Grade.
Carrier Scale.

Call Sandwich builds, deploys, and scales Jambonz — the most powerful open-source voice AI application platform — across enterprise environments. From single-node setups to multi-tenant, carrier-grade infrastructures.

Start Your Jambonz Project Deployment Types
Jambonz FreeSWITCH Drachtio Retell AI Kubernetes Self-Hosted SIP Trunking BYOC Multi-Tenant WebRTC

What is Jambonz

The Open Source Voice AI
Infrastructure Platform

Jambonz is the leading open-source platform for building voice AI applications on top of real telephony infrastructure. It gives you full control — no vendor lock-in, no per-minute fees, and enterprise-grade performance.

  • Built on FreeSWITCH and Drachtio — battle-tested at carrier scale
  • Native integrations with Deepgram, ElevenLabs, OpenAI, and more
  • BYOC (Bring Your Own Carrier) — use any SIP trunk
  • REST API-driven architecture for full programmatic control
  • Multi-tenant by design — ideal for MSPs and resellers
  • Self-hosted: AWS, GCP, Azure, bare metal, or hybrid
  • Full WebRTC support for browser-based voice applications
jambonz-app.js
const app = createJambonzApp({
  host: 'your-jambonz.io',
  apiKey: process.env.API_KEY
});

// AI-powered inbound call handler
app.on('call', async (session) => {
  await session.gather({
    input: ['speech'],
    recognizer: { vendor: 'deepgram', language: 'en-US' },
    synthesizer: { vendor: 'elevenlabs', voice: 'Emma' },
    llm: { model: 'gpt-4o' }
  });
});

// Scale to 10,000+ concurrent calls

Deployment Types

We Deploy Jambonz for
Every Scale & Architecture

Whether you're a startup launching your first voice AI product or an enterprise carrier, we have the right Jambonz architecture.

🚀

Single-Tenant Startup

Fast, cost-efficient Jambonz deployment on a single cloud instance. Perfect for startups building their first voice AI product.

AWS / GCPSingle NodeQuick Deploy
🏢

Enterprise Self-Hosted

Production-grade Jambonz on your own infrastructure. HA configuration, load balancing, RTP media handling at scale.

High AvailabilityOn-PremCustom Hardware
🏗️

Multi-Tenant MSP Platform

Build a white-labeled, multi-tenant Jambonz platform that you resell to clients. Full tenant isolation and management dashboard.

Multi-TenantWhite LabelReseller Ready
🌐

Carrier-Grade Kubernetes

Kubernetes-orchestrated Jambonz for maximum scale. Auto-scaling FreeSWITCH media nodes, geo-distributed deployment.

KubernetesAuto-ScaleGeo-Distributed
🔗

BYOC Integration

Bring Your Own Carrier to Jambonz. We configure your existing SIP trunks (Twilio, Telnyx, Bandwidth, VoIP.ms, or custom).

SIP TrunkingBYOCAny Carrier
🤖

Voice AI Application Dev

Custom Jambonz application development. We build the voice AI workflows on top of your Jambonz infrastructure.

Custom DevAI AppsProduction Ready

Technical Expertise

Every Layer of the
Jambonz Stack

We have deep expertise in every component that makes up a production Jambonz deployment.

🔀

FreeSWITCH

Deep FreeSWITCH configuration — media handling, codec negotiation, SIP routing, performance tuning for high-concurrency deployments.

⚙️

Drachtio

Node.js SIP application server configuration, dialog management, and custom SIP proxy logic for complex call routing scenarios.

🧠

STT / TTS Engines

Deepgram, AssemblyAI, Google STT, Whisper. ElevenLabs, PlayHT, Azure TTS. We optimize for latency, accuracy, and cost.

🤖

LLM Integration

OpenAI, Anthropic, Groq, local LLMs. We engineer the prompt + context pipeline for real-time, low-latency voice conversations.

☁️

Cloud Infrastructure

AWS EC2 / EKS, GCP, Azure. Terraform IaC, auto-scaling groups, RTP media optimization, and cost-efficient architectures.

📊

Observability

Prometheus + Grafana dashboards, call quality metrics, error alerting, and SIP trace analysis for production monitoring.

Why Jambonz

The Advantages of Open Source
Voice AI Infrastructure

No Per-Minute Fees

Unlike managed platforms, Jambonz runs on your infrastructure. Pay for compute, not minutes. At scale, the savings are massive.

No Vendor Lock-in

Swap STT, TTS, and LLM providers freely. Plug in any carrier. Your voice AI stack doesn't depend on a single vendor's roadmap.

Full Data Privacy

All audio and transcripts stay on your infrastructure. Critical for healthcare, finance, legal, and government use cases.

Infinite Scale

Kubernetes-based auto-scaling means you can go from 10 to 10,000 concurrent calls without re-architecting anything.

Enterprise SIP Support

True SIP — not PSTN-only. Integrate with any on-premise PBX, SBC, or carrier. No limitations on how you connect calls.

Open Ecosystem

Use any AI model, any STT engine, any TTS voice. Jambonz is AI-model-agnostic and designed for the fast-moving AI landscape.

Ready to Deploy Jambonz
for Your Business?

Tell us your use case. We'll architect the right Jambonz solution.

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