US/CA US Flag +1 302 486 0000 AUS Australia Flag +61 2 5129 0955 UK UK Flag +44 7828 573520 WhatsApp WhatsApp Icon +44 7828 573520 Login/Signup

Blogs / Article

Healthcare OTP using Voice in India

CRM Messaging · 5 min read · July 27, 2026

Healthcare OTP using Voice in India

Introduction

In the healthcare industry, effective communication is crucial for providing quality services to patients. One key aspect of this communication is the use of One-Time Passwords (OTPs) for authentication and verification purposes. Traditionally, OTPs have been sent via SMS, but with the rise of voice messaging, healthcare providers in India are now exploring the use of voice channels for OTP delivery. This article will delve into the world of CRM Messaging, a CPaaS (Communication Platform as a Service) platform, and its application in the Indian healthcare industry, focusing on voice-based OTP messaging.

Why Healthcare needs Voice for OTP

The healthcare industry in India requires a secure and reliable method for delivering OTPs to patients. Voice messaging offers several advantages over traditional SMS, including:

  • Higher delivery rates: Voice messages are less likely to be blocked or filtered compared to SMS.
  • Improved security: Voice OTPs are more difficult to intercept and exploit compared to SMS-based OTPs.
  • Enhanced user experience: Voice messages can provide a more personalized and engaging experience for patients.

Architecture — Implementing CRM Messaging with APIs

To implement CRM Messaging for voice-based OTP delivery, healthcare providers can leverage APIs (Application Programming Interfaces) to integrate the platform with their existing systems. The architecture typically involves:

  • API Integration: Integrating the CRM Messaging API with the healthcare provider's system to send voice messages.
  • Message Queue: Using a message queue to handle message requests and ensure reliable delivery.
  • Voice Gateway: Utilizing a voice gateway to convert text messages into voice messages.

Compliance — Regulations for India

In India, healthcare providers must comply with various regulations when using voice messaging for OTP delivery. Key compliance topics include:

  • DLT Registration: Registering with the Distributed Ledger Technology (DLT) platform to ensure compliance with TRAI regulations.
  • TRAI Compliance: Complying with TRAI (Telecom Regulatory Authority of India) regulations regarding bulk messaging and OTP delivery.
  • Bulk SMS: Ensuring that bulk SMS messages, including OTPs, comply with TRAI regulations and guidelines.
  • Festival Messaging: Complying with TRAI regulations regarding festival messaging, which may impact OTP delivery during peak festival seasons.
  • WhatsApp API Pricing India: Understanding the pricing models for WhatsApp API in India, which may vary depending on the use case and volume of messages.

Technical Details

The technical details of implementing voice-based OTP delivery using CRM Messaging include:

  • Audio Codecs: Supporting various audio codecs to ensure compatibility with different devices and systems.
  • Text-to-Speech: Utilizing text-to-speech technology to convert text messages into voice messages, allowing for personalized and dynamic OTP delivery.
  • Message Encoding: Ensuring that voice messages are properly encoded to prevent tampering and ensure secure delivery.

Security Measures

To ensure the security of voice-based OTP delivery, CRM Messaging implements various security measures, including:

  • Encryption: Encrypting voice messages to prevent interception and eavesdropping.
  • Authentication: Authenticating the sender and recipient of voice messages to prevent spoofing and phishing attacks.
  • Access Controls: Implementing access controls to restrict access to sensitive information and prevent unauthorized use.

Best Practices

To ensure successful implementation of voice-based OTP delivery using CRM Messaging, healthcare providers should follow best practices, including:

  • Testing and Quality Assurance: Thoroughly testing the integration to ensure reliable delivery and quality of voice messages.
  • Compliance: Ensuring compliance with relevant regulations.
  • User Education: Educating patients on the use of voice OTPs and the benefits of this method.

FAQ

What is the difference between voice and SMS OTPs?

Voice OTPs offer improved security and delivery rates compared to SMS-based OTPs. Voice messages are also more difficult to intercept and exploit, providing an additional layer of security for patients.

How do I ensure compliance with TRAI regulations?

To ensure compliance with TRAI regulations, healthcare providers must register with the DLT platform, comply with bulk messaging guidelines, and ensure that festival messaging regulations are followed.

Can I use WhatsApp API for OTP delivery in India?

Yes, WhatsApp API can be used for OTP delivery in India, but it's essential to understand the pricing models and ensure compliance with TRAI regulations.

What are the advantages of using CRM Messaging for voice OTPs?

The advantages of using CRM Messaging for voice OTPs include improved security, higher delivery rates, and an enhanced user experience for patients.

How do I integrate CRM Messaging with my existing system?

To integrate CRM Messaging with your existing system, you can use APIs to send voice messages and leverage the platform's architecture, which includes API integration, message queue, and voice gateway.

What is the cost of using CRM Messaging for voice-based OTP delivery?

The cost of using CRM Messaging for voice-based OTP delivery varies depending on several factors, including message volume and API usage. For more information, visit the pricing page or contact sales.

Conclusion

In conclusion, CRM Messaging is a powerful platform for healthcare providers in India to deliver voice-based OTPs to patients. With its secure, reliable, and personalized experience, voice messaging can improve the overall quality of healthcare services. To get started with CRM Messaging, visit the app today and experience the benefits of voice-based OTP delivery for yourself.


Ensure DLT registration and TRAI compliance for promotional SMS in India. For compliance and setup guidance tailored to your use case, reach out to a CRM Messaging expert.

Start messaging with CRM Messaging

SMS, WhatsApp, Email, and Voice — integrated with your CRM.

Start free trial