Voice Infrastructure

Intelligent Voice API

Global voice calls & IVR with 99.95% reliability, 50ms connection times, and 100+ language support.

Call Completion: 99.95%
Connection Time: 50ms
Languages: 100+
Global Support: 24/7
Voice API Dashboard with Call Analytics

Voice Features

Comprehensive tools for voice communication

Text-to-Speech

Natural sounding voice in 50+ languages

Call Routing

Intelligent routing based on time or skills

IVR Systems

Multi-level interactive voice menus

Outbound Calls

Initiate calls with custom caller IDs

Voicemail Detection

Automatically detect voicemail boxes

Call Recording

Secure encrypted call storage

IVR Builder

Visually design your interactive voice response system

Welcome Message
Plays: welcome.mp3
Main Menu
3 options
Sales Department
To: sales@acme.com
Support Queue
Queue: support-queue

Voice Use Cases

How businesses use our Voice API

Appointment Reminders

Automated calls to reduce no-shows

Examples:

  • Healthcare visits
  • Service appointments
  • Virtual meetings

Customer Support

24/7 self-service IVR systems

Examples:

  • Balance inquiries
  • Order status
  • Tech support

Surveys

Voice-based feedback collection

Examples:

  • Customer satisfaction
  • Political polling
  • Market research

Alerts

Critical notifications via voice

Examples:

  • Fraud alerts
  • Delivery updates
  • Emergency notifications

Call Flow Examples

Pre-built templates for common voice scenarios

Inbound IVR

Handle incoming calls with interactive menus

1
Call arrives at your number
2
Play welcome message
3
Present menu options
4
Route based on selection

Simple Pricing

Pay only for what you use with per-minute billing

Starter

$0.015
per minute

For small call volumes

Includes:

  • 100 minutes included
  • Basic IVR
  • Standard voices
  • Email support

Limitations:

  • No call recording
  • 5 numbers max
  • No queueing

Business

$0.012
per minute

For growing operations

Includes:

  • 1,000 minutes included
  • Advanced IVR
  • Premium voices
  • Phone support
  • Call recording
  • 10 numbers

Limitations:

  • No speech recognition
  • Basic analytics

Enterprise

Custom
volume pricing

For high-volume needs

Includes:

  • Unlimited minutes
  • AI voices
  • Speech recognition
  • 24/7 support
  • Advanced analytics
  • Dedicated numbers
  • Custom SLAs

Developer Resources

Everything you need to integrate our Voice API

API Reference

Complete Voice API documentation

View Resource

Quickstarts

Get started in 5 minutes

View Resource

SDKs

Client libraries for your stack

View Resource

Tutorials

Step-by-step guides

View Resource

Webhooks

Real-time call event notifications

View Resource
voice-api-example.js
// Initiate an outbound call
const response = await fetch('https://api.sendexa.co/v1/calls', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY'
  },
  body: JSON.stringify({
    to: '+1234567890',
    from: '+1987654321',
    answer_url: 'https://your-server.com/answer-script'
  })
});

// Handle incoming call (webhook)
app.post('/answer-script', (req, res) => {
  const response = {
    actions: [
      {
        action: 'say',
        text: 'Hello, thank you for calling Acme Inc.',
        voice: 'female',
        language: 'en-US'
      },
      {
        action: 'menu',
        options: [
          { digit: '1', action: 'connect', endpoint: 'sales@acme.com' },
          { digit: '2', action: 'connect', endpoint: 'support@acme.com' }
        ],
        timeout: 10
      }
    ]
  };
  res.json(response);
});
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