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Documentation Index

Fetch the complete documentation index at: https://plivo.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

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Overview

When you don’t want to receive incoming calls on your Plivo numbers, follow the instructions in this guide to create an application to reject them. You can reject incoming calls either by using our PHLO visual workflow builder or our APIs and XML documents. Follow the instructions in one of the tabs below.
Here’s how to use a Plivo XML document that rejects incoming calls on a Plivo number.

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How it works

Inbound Call Flow
Plivo requests an answer URL when it answers the call (step 2) and expects the file at that address to hold a valid XML response from the application with instructions on how to handle the call. In this example, when an incoming call is received, Plivo rejects the call using the Hangup XML element.

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Prerequisites

To get started, you need a Plivo account — sign up with your work email address if you don’t have one already. You must have a voice-enabled Plivo phone number to receive incoming calls; you can rent numbers from the Numbers page of the Plivo console, or by using the Numbers API. If this is your first time using Plivo APIs, follow our instructions to set up a .NET development environment and a web server and safely expose that server to the internet.

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Create an MVC controller to reject incoming calls

In Visual Studio, create a new project. Use the template for Web Application (Model-View-Controller).
Create an MVC app
Give the project a name — we used Rejectcall.Navigate to the Controllers directory in the Rejectcall project. Create a controller named RejectcallController.cs and paste into it this code.
using System;
using Plivo.XML;
using System.Collections.Generic;
using Microsoft.AspNetCore.Mvc;

namespace Rejectcall
{
    public class RejectcallController : Controller
    {
        public IActionResult Index()
        {
            Plivo.XML.Response resp = new Plivo.XML.Response();
            // Add Hangup XML Tag
            resp.AddHangup(new Dictionary<string, string>()
            {
                {"reason","rejected"}, // Specify the reason for hangup
            });
            var output = resp.ToString();
            return this.Content(output, "text/xml");
        }
    }
}

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Create a Plivo application to reject calls

Associate the controller you created with Plivo by creating a Plivo application. Visit Voice > Applications in the Plivo console and click on Add New Application, or use Plivo’s Application API.Give your application a name — we called ours Reject Call. Enter the server URL you want to use (for example https://<yourdomain>.com/reject_caller/) in the Answer URL field and set the method to POST. Click Create Application to save your application.
Create Application

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Assign a Plivo number to your application

Navigate to the Numbers page and select the phone number you want to use for this application.From the Application Type drop-down, select XML Application.From the Plivo Application drop-down, select Reject Call (the name we gave the application).Click Update Number to save.
Assign Phone Number to Reject Call App

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Test

Make a call to your Plivo number using any phone. Plivo will send a request to the answer URL you provided requesting an XML response and then process the call according to the instructions in the XML document the server provides — in this case, rejecting it.