The way OTP works on your platform is to look for a very good OTP service provider, get their API for OTP delivery and then proceed to integrate this on your application. You can see the best Voice OTP provider in Nigeria here. 

Many times, we’ve reiterated the benefits and importance of Voice OTP for this purpose, whether used in support of SMS OTP or even as the sole option of delivering OTP. And the reasons why you should choose Voice OTP are clearly stated here. In fact, if you are still not sure as to whether or not that is the best option for you, you can check how it compares with SMS OTP. 

Once you’ve made up your mind to use Voice OTP, the next question is; “How do I get the API to integrate on my website or mobile application?”. Let’s direct you to a free easy to use and integrated API for Voice OTP hosted by SmartSMSSolutions. 

The SmartSMSSolutions’ Voice OTP API 

You can find the Voice OTP API of SmartSMSSolutions at https://www.developer.smartsmssolutions.com. Once you get on the website, follow the process enumerated below to integrate using the API:

• Navigate to our developers' page at https://www.developer.smartsmssolutions.com
• You will find Voice OTP as one of the options on a listed menu on the left. Click on that. 
• Then click on Submit a Voice OTP request.
• On the Next Page, you will find the following information which would be supplied via API:

1. Your API-x token that has been generated on the SmartSMSSolutions’ website
2. The phone number you wish to send Voice OTP to
3. The OTP code. This can be between 4-6 characters, with the length dependent on the Voice OTP class you’ve selected. See here what OTP classes are and how to access them. 
4. Provide the code of the OTP class you’ve chosen. You can find the classes here: https://app.smartsmssolutions.com/voiceotp-otp-classes
5. Next, you can provide a unique ref_id, with which you can monitor the delivery of the Voice OTP. 

• Once you are done providing this information, you can proceed to send the Voice OTP request using this endpoint: https://app.smartsmssolutions.ng/io/api/client/v1/voiceotp/send/

With these few steps, you have unlocked the power of the very efficient and fast Voice OTP delivery service of SmartSMSSolutions. If you want to test the delivery capabilities of this service, you can send a voice OTP to a single number on the website now. After that, you can proceed with your API integration. 

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