---
title: How does the system handle failed deliveries?
description: "The API allows you to configure reDial (number of redial attempts) and redialInterval (time between attempts, in minutes: 5, 10, or 15). This ensures the system retries delivery if the initial call fails. ### More Related Articles - [Is the Voice OTP API secure?](https://www.smsgatewaycenter.com/blog/kb/is-the-voice-otp-api-secure/)…"
url: "https://www.smsgatewaycenter.com/blog/kb/how-does-the-system-handle-failed-deliveries/"
updated: "2025-06-13"
category: OBD Voice Call / Voice Call OTP
---

# How does the system handle failed deliveries?

The API allows you to configure reDial (number of redial attempts) and redialInterval (time between attempts, in minutes: 5, 10, or 15). This ensures the system retries delivery if the initial call fails.

### More Related Articles

- [Is the Voice OTP API secure?](https://www.smsgatewaycenter.com/blog/kb/is-the-voice-otp-api-secure/)
- [How can I test the Voice OTP API?](https://www.smsgatewaycenter.com/blog/kb/how-can-i-test-the-voice-otp-api/)
- [Can I send Voice OTPs to multiple mobile numbers?](https://www.smsgatewaycenter.com/blog/kb/can-i-send-voice-otps-to-multiple-mobile-numbers/)

Found this useful?[Add as Preferred Source on Google](https://www.google.com/preferences/source?q=smsgatewaycenter.com)