---
title: What parameters are required to send a Voice OTP?
description: "The required parameters include: - **userid**: Your SMSGatewayCenter username. - **password**: Your account password. - **audioType**: Set to pin for OTP voice calls. - **sendMethod**: Set to quick. - **mobile**: Recipient's mobile number (e.g., 919999999999). - **pin**: The OTP code to be sent…"
url: "https://www.smsgatewaycenter.com/blog/kb/what-parameters-are-required-to-send-a-voice-otp/"
updated: "2025-06-13"
category: OBD Voice Call / Voice Call OTP
---

# What parameters are required to send a Voice OTP?

The required parameters include:

- **userid**: Your SMSGatewayCenter username.
- **password**: Your account password.
- **audioType**: Set to pin for OTP voice calls.
- **sendMethod**: Set to quick.
- **mobile**: Recipient's mobile number (e.g., 919999999999).
- **pin**: The OTP code to be sent (e.g., 906547).
- **pinClipId**: The audio clip to use (e.g., 'OneTimePassword', 'VerificationCode', 'Default', 'FollowingCode', 'Registration', 'UseThisCode').
- **pinRepeatCount**: Number of times to repeat the clip and PIN (e.g., 1 or 2).
- **reDial**: Number of redial attempts (e.g., 1 or 2).
- **redialInterval**: Interval between redial attempts in minutes (options: 5, 10, 15).
- **format**: Response format (e.g., json).
- **duplicateCheck**: Set to true to avoid duplicate calls.

Example: https://unify.smsgateway.center/VoiceApi/send?userid=YourUserId&password=YourPassword&audioType=pin&sendMethod=quick&mobile=919999999999&redialInterval=5&reDial=1&duplicateCheck=true&format=json&pin=906547&pinClipId=OneTimePassword&pinRepeatCount=1

### More Related Articles

- [Is the Voice OTP API secure?](https://www.smsgatewaycenter.com/blog/kb/is-the-voice-otp-api-secure/)
- [How does the system handle failed deliveries?](https://www.smsgatewaycenter.com/blog/kb/how-does-the-system-handle-failed-deliveries/)
- [How can I test the Voice OTP API?](https://www.smsgatewaycenter.com/blog/kb/how-can-i-test-the-voice-otp-api/)

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