Now in Beta — Carrier-Grade & AI-Ready

The Infrastructure
Layer for AI Voice

Carrier-grade voice APIs, SIP trunking, and real-time telephony built for AI companies. Go live in minutes.

🚀 Start Building 🔑 Get API Key

99.99%

Uptime SLA

<80ms

Avg Latency

500+

CPS Supported

India

Tier-1 Carrier

app.dotvoice.ai/dashboard

Live

1,284

Calls Today

98.7%

Success Rate

74ms

Avg Latency

Active Trunks

Core Features

Everything voice,
nothing missing

From raw SIP to programmable calling APIs — the complete infrastructure stack for voice AI products.

India Exclusive

🔗

SIP Trunking

India's most reliable SIP trunks. Direct carrier peering, DID provisioning, and ultra-low latency routing across all major Indian operators.

📞

Voice APIs

Programmable calling with REST APIs. Make, receive, and control calls with simple API calls. Full DTMF, conference, and call transfer support.

⚡

Real-time Streaming

WebSocket-based audio streaming with <80ms latency. Feed live audio to your STT/LLM/TTS pipeline without buffering delays.

🔀

Call Routing & Control

Dynamic call routing with IVR, call queues, skill-based routing, and real-time call control APIs. Route any call anywhere.

🔢

Number Provisioning

Instantly provision local DIDs, mobile numbers, and toll-free numbers. Search by city, area code, or operator from our inventory.

🚀

High CPS Support

Handle 500+ concurrent calls per second without breaking a sweat. Horizontal auto-scaling built into our core infrastructure.

AI Infrastructure

Built for AI Voice Agents

The complete pipeline for building production-grade voice AI — from SIP to LLM and back to speaker in under 300ms.

📞

Caller

PSTN / SIP

~20ms

📡

dotvoice

SIP Edge

~30ms

🎤

STT

Deepgram / Whisper

~80ms

🧠

LLM

GPT-4 / Claude

~60ms

🔊

TTS

ElevenLabs / Azure

~20ms

👤

End User

Hears AI

⚡

Low Latency Audio Streaming

WebSocket audio streams with sub-80ms glass-to-glass latency. Designed for real-time conversational AI where every millisecond matters.

🔗

AI-Ready SIP Infrastructure

Pre-built SIP integrations with VAPI, Retell, and custom AI agents. No complex SIP configuration — connect your AI model in minutes.

🤝

Seamless AI Model Integration

Native connectors for OpenAI Realtime API, ElevenLabs voice, and any WebRTC-based AI voice stack. Plug and play architecture.

🎙️

Barge-In & Interruption Handling

Intelligent voice activity detection lets callers interrupt the AI mid-sentence naturally — just like a real conversation.

How It Works

From your app to end user in milliseconds

A single API call triggers a carrier-grade call flow across our global telephony network.

Your App

REST API call

dotvoice API

Auth + route

SIP Network

Edge proxy

Carrier

PSTN bridge

End User

Receives call

AI Response

Webhook + stream

⚡

Instant Connection

Call setup in under 200ms from API call to ring.

🔄

Bidirectional Audio

Full-duplex audio streaming to your AI pipeline.

📬

Real-time Webhooks

Every call event delivered to your endpoint instantly.

Developer First

Ship voice AI faster
with a clean API

REST-first design. Idiomatic SDKs. Webhook events. Comprehensive docs. Everything a developer needs to build without friction.

✓

REST API & OpenAPI Spec

Fully documented endpoints with interactive playground. Generate clients in any language.

✓

Webhook-Based Events

Call answered, completed, recording ready — real-time events pushed to your endpoint.

✓

Native SDKs

Official SDKs with full TypeScript support and auto-complete.

Node.js

Python

Java

REST

cURL — Make a Call

# Make an outbound AI call
curl -X POST \
  https://api.dotvoice.ai/v1/calls \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
    "from": "+918031448537",
    "to":   "+919876543210",
    "answer_url": "https://yourapp.com/answer",
    "stream_url": "wss://yourapp.com/audio",
    "record": true,
    "ai_mode": true
  '}'

# Response
{
  "call_id":  "call_7f3a9b2c1d4e",
  "status":  "queued",
  "latency": 74,
  "trunk":   "in-mumbai-1"
}

Node.js SDK

import { DotVoice } from '@dotvoice/sdk';

const dv = new DotVoice({ apiKey: process.env.DV_KEY });

const call = await dv.calls.create({
  from: '+918031448537',
  to:   '+919876543210',
  streamUrl: 'wss://yourapp.com/audio',
  aiMode: true,
});

console.log(call.callId); // call_7f3a9b2c1d4e

Use Cases

What people build on dotvoice

From inbound support bots to outbound sales dialers — the voice stack for every AI use case.

🤖

AI Call Center

Replace traditional IVRs with fully conversational AI agents that handle thousands of calls simultaneously. Natural language, low latency, zero wait times.

Inbound Calls NLP Routing Escalation

📤

Outbound AI Calling

Launch high-volume outbound campaigns with AI agents that sound human. Personalised conversations at scale with automatic CRM sync.

Bulk Dialing High CPS CRM Sync

🎧

Customer Support Automation

Automate tier-1 support with AI that resolves common queries, processes requests, and seamlessly hands off complex cases to humans.

Auto-resolve Human Handoff CSAT

🎯

Lead Qualification Bots

Qualify inbound leads 24/7 with AI voice agents that ask the right questions, score leads, and book meetings directly into your calendar.

Lead Scoring Calendar Sync 24/7

Enterprise Grade

Infrastructure you can bet your business on

Built for enterprises that need carrier-grade reliability, global reach, and compliance from day one.

99.99%

Uptime SLA
contractually guaranteed

500+

Calls per second
peak capacity

<80ms

Average latency
India network

24/7

NOC support
dedicated SRE team

🌐

Global Carrier Connectivity

Direct peering with Tier-1 carriers in India, US, UK, and Singapore. Redundant routes ensure your calls always connect.

🔒

Secure & Compliant

TLS 1.3 for signalling, SRTP for media. SOC2 Type II, TRAI compliant. Data residency in India available.

📈

Horizontal Scalability

Kubernetes-native architecture that auto-scales with your call volume. No provisioning required — just call the API.

📊

Real-time Observability

Call quality metrics, latency histograms, and error rates in real-time. Grafana dashboards and Prometheus metrics included.

Integrations

Works with your AI stack

Native integrations with the leading AI voice platforms, models, and infrastructure tools.

🤖

OpenAI

Realtime API

🔊

ElevenLabs

TTS / Voice Clone

🔄

Retell AI

Voice Agent

📡

VAPI

Voice AI Platform

🎤

Deepgram

STT / Transcription

🌐

WebRTC

Browser Calling

🧠

Claude / Anthropic

LLM

🎙️

Azure Speech

STT + TTS

🔗

Twilio

Migration Path

⚡

Zapier / n8n

Automation

The InfrastructureLayer for AI Voice

Everything voice,nothing missing