AI Voice Gateway for PSTN, SIP, Asterisk,WebRTC

Engineered for Performance

Don't compromise. Get the flexibility of self-hosting with the reliability of enterprise software.

17 AI Providers

Mix and match 7 TTS, 5 STT, and 5 LLM providers. Swap Sarvam for local accents or Groq for speed instantly without code changes.

Sub-200ms Latency

Industry-leading response times. Gateway Mode pipes audio directly to OpenAI Realtime for conversations faster than human thought.

Seamless PBX Integration

Built for telephony. Connects via AudioSocket (TCP) directly to Asterisk dialplans. Supports barge-in, DTMF, and call transfers.

The Voice Stack Architecture

A highly modular pipeline that decouples telephony from intelligence. Swap components without rewriting code.

Input Layer

Handles raw PCM streams from Asterisk (TCP) or Web Browsers (WebSocket).

Intelligence Layer

Routes audio to STT, manages conversation state with LLM (n8n/GPT-4), and caches TTS.

Output Layer

Streams synthesized audio back to the caller with smart buffering for jitter-free playback.

Asterisk / Browser

Gateway Core

STT

LLM

TTS

AI Providers

Redis Cache

Ecosystem Integrations

Ears

Speech Recognition

Sarvam Deepgram Groq OpenAI

Mind

Intelligence & Logic

n8n Flowise GPT-4o Claude

Voice

Synthesis

ElevenLabs Azure Google Aura

Deploy in Minutes

Choose your preferred deployment method.

FASTEST

Quick Install (Script)

Automated script for standalone Binary installation.

bash

curl -fsSL https://vexyl.ai/downloads/install_gateway.sh | sudo bash

RECOMMENDED

Docker

The fastest way to get started. Works on any system with Docker installed.

1. Pull Image

docker pull vexyl/vexyl-voice-gateway:latest

2. Run Container

docker run -d -p 8080:8080 -e SARVAM_API_KEY=key ...

Binary

Perfect for bare-metal servers or air-gapped environments without Docker.

Download Archive (.zip)

1. Download & Extract

wget -O gateway.zip https://vexyl.ai/downloads/vexyl-gateway.zip && unzip gateway.zip

2. Permission & Run

chmod +x vexyl-gateway && ./vexyl-gateway

3. Create Config

echo "SARVAM_API_KEY=..." > .env

Kubernetes

For high-availability enterprise deployments with auto-scaling.

1. Create Secrets

kubectl create secret generic...

2. Apply Manifest

kubectl apply -f vexyl-deployment.yaml

View full installation guide

Enterprise Voice AI
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