Send Voice Call
Sending a Voice call is completely different from Sending Text SMS. A Voice call involves multiple factor to be considered before & after the Voice Call is sent. But not to worry when you are using SainoFirst's Voice Platform. We've taken all complexities on us, so that you can have a seamless integration. To send voice call you have below options:-
  1. 1.
    Text-To-Speech based Voice Call
  2. 2.
    Pre-Recorded Audio File based voice Call
post
<base_url>
/bulk-voice
Voice Call Send

A HTTP POST request should contain body like below.
Text-to-Speech-Voice-Call-Request.json
{
"numbers": [
"xxxxxxxxxx"
], // if same message is to be sent on multiple numbers, just add them into this array
"text": "This is text-to-speech service.",
"language_id": 4, // Language Id of Text
"maxLengthOfCall": 30, // Maximum Length of call, in seconds
"subscription_id": 5, // Subscription used (for Price calculation and Routing)
"speech_rate": 1, // Speed of voice call (lower the value, slower the speed [0.5 to 2])
"is_text": true,
// The url at which you want to track the delivery report for this campaign
"reportUrl": "https://app.sainofirst.com/api-delivery-endpoint?customKey1=CustomValue1&customKey2=CustomValue2"
}

After the request is successfully received at our server, response will be like below with Status Code: 200
Response.json
{
"status":true,
"message":"Voice Call scheduled Successfully.",
"id":xyz // request-id for this request, can be used for future references.
}

A HTTP POST request should contain body like below.
Text-to-Speech-Voice-Call-Request.json
{
"numbers": [ "xxxxxxxxxx" ], // if same message is to be sent on multiple numbers, just add then in this array like this
"text": "This is text-to-speech service.",
"language_id": 4, // Language Id of Text
"maxLengthOfCall": 30, // Maximum Length of call, in seconds
"subscription_id": 5, // Subscription used (for Price calculation and Routing)
"speech_rate": 1, // Speed of voice call (lower the value, slower the speed [0.5 to 2])
"is_text": true,
"config": { // optional
"repeat": 1, // If pressed, voice message will be repeated (maxLengthOfCall will be counted)
"callTransfer": {
"transferKey": 2, // While call is active, pressing this key will forward the call
"transferNumber": xxxxxxxxxx // Forward call to this Number
}
},
"send_at": 1569266700, // required if scheduled for later date or time, otherwise optional
"timezone": "Asia/Kolkata(GMT +05:30)" // timezone,
// The url at which you want to track the delivery report for this campaign
"reportUrl": "https://app.sainofirst.com/api-delivery-endpoint?customKey1=CustomValue1&customKey2=CustomValue2"
}

After the request is successfully received at our server, response will be like below with Status Code: 200
Response.json
{
"status":true,
"message":"Voice Call scheduled Successfully.",
"id":xyz // request-id for this request, can be used for future references.
}

A HTTP POST request should contain body like below.
Pre-Recorded-Voice-Call-Request.json
{
"numbers": [ "xxxxxxxxxx" ], // if same message is to be sent on multiple numbers, just add then in this array like this
"maxLengthOfCall": 30, // Maximum Length of call, in seconds
"subscription_id": 5, // Subscription used (for Price calculation and Routing)
"is_text": false,
"audio_file_url": "https://somefancy-audio-file-url", // required, is_text is true
"config": { // optional
"repeat": 1, // If pressed, voice message will be repeated (maxLengthOfCall will be counted)
"callTransfer": {
"transferKey": 2, // While call is active, pressing this key will forward the call
"transferNumber": xxxxxxxxxx // Forward call to this Number
}
},
"send_at": 1569266700, // required if scheduled for later date or time, otherwise optional
"timezone": "Asia/Kolkata(GMT +05:30)", // timezone
// The url at which you want to track the delivery report for this campaign
"reportUrl": "https://app.sainofirst.com/api-delivery-endpoint?customKey1=CustomValue1&customKey2=CustomValue2"
}

After the request is successfully received at our server, response will be like below with Status Code: 200
Response.json
{
"status":true,
"message":"Voice Call scheduled Successfully.",
"id":xyz // request-id for this request, can be used for future references.
}

Advanced voice call is the voice call where Listener (or Receiver) will be able to interact even with the simple pre-recorded or text-to-speech voice call. Features in Advance voice call:
  • Repeat the same voice message again on press of 'Assigned' key.
  • Forward the call to some other (predefined) number on press of 'Assigned' key.
  • Capture the response of every phone key pressed by the user while the call is going on.
The config parameter of the request body is used to make a advanced voice call.
This parameter is a JSON Object which has two properties.
  1. 1.
    repeat - Value must be a single digit number. On press of this number key, the call will be repeated.
  2. 2.
    callTransfer - Value is an object with two properties: transferKey - Value must be a single digit number. On press of this number key, the call will be repeated.
Parameter
Value Type
Description
repeat
Single Digit Number
On press of this number key, the call will be repeated.
The vice call will be disconnected automatically when the maxLengthOfCall is reached.
callTransfer
Object
Must contain two properties inside this object.
  1. 1.
    transferKey - On press of this key, call will be forwarded.
  2. 2.
    transferNumber - Number on which call to be forwarded.
Example:-
Advanced-Voice-Config-PART.json
"config": { // optional
"repeat": 1, // If pressed, voice message will be repeated (maxLengthOfCall will be counted)
"callTransfer": {
"transferKey": 2, // While call is active, pressing this key will forward the call
"transferNumber": xxxxxxxxxx // Forward call to this Number
}
},

In order to get delivery reports directly into your system you need to take care of few simple things.
  • Please make sure that, the URL passed in the field reportUrl, must accept HTTP POST request with JSON request body.
  • If you wish to get any additional data in the report callback, you should user query parameters and values in the URL itself.
If you don't pass the reportUrl parameter in request body, we will not be able to push the reports to your system. However, messages will still be delivered to the destination.
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On this page
post
Voice Call Send
Simple Text-To-Speech Voice Call ( 2 Factor Authentication )
Fully Featured Text-To-Speech Voice Call
Pre-Recorded Audio Voice Call
Advanced Voice Call: How to Configure Voice Call ?
Reports & Deliveries