Programmable Voice API, Worldwide — Carrier-Grade Delivery at Scale
Make automated calls, deploy IVR systems, and deliver voice alerts across 190+ countries with reliable routes, powerful APIs, and real-time delivery reports.
Comprehensive Voice API Capabilities
Everything you need to build sophisticated voice-enabled applications. Full control over call flows, audio quality, and user interactions.
RESTful API Architecture
Clean, intuitive REST endpoints with comprehensive documentation. Support for JSON/XML responses and webhook callbacks for real time event tracking.
Global Voice Connectivity
Direct carrier connections across 190+ countries. Premium voice quality with automatic failover routing and local number support in 75+ regions.
Interactive IVR Builder
Create multi-level IVR systems with DTMF input collection, call routing logic, voice menus, and dynamic response handling through API configuration.
Real-Time Call Control
Programmatically control active calls with pause, resume, transfer, record, and conference capabilities. Modify call flow during execution.
Advanced Analytics Dashboard
Track call delivery rates, duration metrics, cost analysis, and user engagement. Export reports in CSV/PDF formats with custom date ranges.
Enterprise-Grade Reliability
Built on redundant infrastructure with 99.9% uptime guarantee. Auto-retry logic, DND management, and compliance with international regulations.
High Throughput Processing
Handle 10,000+ concurrent calls with sub-200ms API response times. Auto-scaling infrastructure adapts to traffic spikes without manual intervention.
Text-to-Speech Engine
Convert text to natural sounding speech in 40+ languages. Support for SSML markup, custom voice selection, speed control, and pronunciation tuning.
How Programmable Voice API Works
Three simple steps to integrate voice calling into your application
Authenticate & Configure
Obtain your API credentials from the dashboard. Configure your sender ID, callback URLs, and voice preferences. Set up webhook endpoints to receive real-time call status updates.
Make API Request
Send a POST request to our voice endpoint with recipient number, message content, and optional parameters like language, voice type, and retry logic. Receive instant confirmation with unique call ID.
Monitor & Analyze
Track call status through webhooks or polling API. Access detailed logs including call duration, delivery status, cost breakdown, and recording files. Use analytics for optimization.
Voice API Use Cases
Power diverse applications across industries with programmable voice capabilities
Voice OTP Verification
Deliver one time passwords via automated voice calls for authentication. Higher reach than SMS with support for users without smartphones.
Appointment Reminders
Automated voice reminders for healthcare, salon, or service appointments. Reduce no-shows by 40% with personalized voice notifications.
Alert & Emergency Notifications
Critical alerts for banking transactions, security breaches, or emergency situations. Ensure immediate attention with voice delivery.
Customer Survey & Feedback
Collect feedback through IVR based surveys. DTMF input collection for ratings, NPS scores, and customer satisfaction metrics.
Order Status Updates
Notify customers about order confirmations, shipping updates, and delivery status through automated voice calls with tracking details.
Lead Verification & Qualification
Automated outbound calls to verify leads, confirm interest, and collect preliminary information before sales team follow-up.
Voice API Architecture & Workflow
Understanding the technical flow from API request to call delivery
Client Application → API Gateway
Your application sends HTTPS POST request with call parameters. Request passes through authentication layer validating API credentials and rate limits.
Processing Engine → TTS Conversion
Message content is processed through Text-to-Speech engine. Audio file generated in specified language and voice type, cached for repeated calls.
Routing Layer → Carrier Selection
Intelligent routing determines optimal carrier based on destination country, cost, and quality metrics. Automatic failover to backup routes if needed.
Call Initiation → User Device
Outbound call placed to recipient number. Audio stream delivered upon answer. Real-time status updates sent to webhook URL.
Callback & Analytics → Your Server
Call completion data sent to webhook. Detailed logs stored including duration, cost, recording URL, and delivery status for analytics dashboard.
