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Voice Call and OTP API for IT and SaaS Companies

Deliver OTPs and automated alerts by voice, triggered from your application through a documented API with call status webhooks.

TRAI Compliant | 100% Delivery | Detailed Reports
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Overview

What are Bulk Voice Campaigns (OBD)?

Our voice broadcasting service india — also referred to as Outbound Dialing (OBD) or Bulk Voice Calls — enables businesses to deliver pre-recorded audio messages to large contact lists automatically and simultaneously. Bulk voice campaigns are a particularly effective channel for reaching audiences in their native language, making your message accessible even to customers who do not use smartphones or data services. Whether the use case is a voice call for election campaign india drive, an emergency community alert, or a time-sensitive promotional announcement, bulk voice calls offer a personal quality that text-based channels often cannot replicate — at genuine scale.

Who is this for?

IT companies, SaaS products and app developers that need voice OTPs and automated calls.

Voice Call and OTP API for IT and SaaS Companies

Voice Calls for IT & SaaS Companies

Some users cannot receive a text, and others need a code read out to them. A voice OTP or automated alert, triggered from your product, covers those cases.

Nexcomm's API includes call initiation, text-to-speech, call status webhooks and DTMF capture, so your engineers can build voice into the product itself.

How Bulk Voice Campaigns Work

Step 1

Record Message

Upload a professionally recorded audio file or generate your message using our built-in Text-to-Speech engine across multiple languages — ready to power your next bulk voice campaign.

Step 2

Upload Contacts

Import your contact list in Excel or CSV format. Where required, the list is automatically checked against the DND registry before your bulk voice calls begin.

Step 3

Schedule Call

Choose the exact date and time for your bulk voice campaign to go out — timed for the calling windows most likely to get answered.

Step 4

System Dialing

Our high-capacity dialer initiates bulk voice calls to thousands of numbers simultaneously, ensuring your message reaches the maximum possible audience in minimal time.

Step 5

Track Response

Review detailed call logs covering answered calls, call duration, and any key-press inputs (DTMF) captured during the bulk voice campaign.

Key Features

IVR Integration

Capability: Press-1 Campaigns

Benefit:

Retry Logic

Capability: Smart Redialing

Benefit:

DND Filtering

Capability: Compliance Check

Benefit:

Text-to-Speech

Capability: Dynamic Audio

Benefit:

Scheduling

Capability: Time-Zone Aware

Benefit:

Detailed Analytics

Capability: Call Duration Logs

Benefit:

How Software Teams Use Voice Calls

Voice OTPs

Read one-time passwords to users by voice.

Automated alerts

Call users about important account events.

Keypad responses

Capture confirmations through DTMF input.

Why Software Companies Choose Nexcomm for Voice

High Capacity

Our dialing infrastructure is built to handle millions of bulk voice calls per hour — suitable for large-scale political, commercial, and emergency broadcast requirements.

Crystal Clear Audio

Premium carrier routing ensures that voice quality across every bulk voice call remains consistent and clear — regardless of campaign volume.

Interactive Options

Full DTMF support within our bulk voice campaign platform enables real-time survey collection, interest capture, and lead qualification directly within the call flow.

Cost Effective

Pulse-based billing means you are charged only for bulk voice calls that connect successfully — not for unanswered or failed attempts.

99.99%
Uptime
50M+
Messages/Day
24/7
Support
100%
Compliance
Compliance First Platform

Compliance & Regulations

All bulk voice campaigns managed through Nexcomm are structured in full compliance with TRAI's TCCCPR telemarketing regulations.

DND Registry Check
Permissible Calling Hours
Caller ID Transparency
Opt-out Mechanism

POST /api/v1/messages

// Request Payload

{

"to": "+919876543210",

"body": "Your OTP is 1234",

"type": "transactional"

}

Developer Friendly

Developer Friendly API

Trigger bulk voice calls programmatically from within your application or internal system using our straightforward and well-documented API.

Initiate Call API
Text-to-Speech API
Call Status Webhooks
DTMF Capture

Transparent Pricing

Bulk voice call service pricing is calculated on a pulse-duration basis — typically billed per 15 or 30 seconds of connected call time. Volume-based discounts are available for businesses running frequent bulk voice campaigns. Contact our team for a customized rate based on your monthly call volumes and campaign requirements.

Get Voice Rates

No hidden fees. Pay for what you use.

Frequently Asked Questions

Find Services Available Near You

Explore our service availability across major cities, states, and industries.

Speak Directly to Your Audience

Launch your automated voice campaign today and engage customers with the power of voice.

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