You can use call forwarding to dynamically route incoming calls based on any of several factors.
This guide shows how to forward calls either by using our PHLO visual workflow builder or our APIs and XML documents. Follow the instructions in one of the tabs below.
You can create and deploy a workflow to implement call forwarding with a few clicks on the PHLO canvas.
To get started, you need a Plivo account — sign up with your work email address if you don’t have one already. To receive incoming calls, you must have a voice-enabled Plivo phone number. You can rent numbers from the Numbers page of the Plivo console, or by using the Numbers API.
To create a PHLO, visit the PHLO page of the Plivo console. If this is your first PHLO, the PHLO page will be empty.
From the list of components on the left side, drag and drop the Call Forward component onto the canvas. When a component is placed on the canvas it becomes a node.
Draw a line to connect the Start node‘s Incoming Call trigger state to the Call Forward node.
In the Configuration tab at the right of the canvas, configure the Call Forward node to select the From number using a variable. Enter two curly brackets to view all available variables, and choose the appropriate one. Enter all the numbers you want to call in the To field, separated with commas.
Your complete PHLO should look like this.
Once you’ve created and configured your PHLO, assign it to a Plivo number.
You can now call your Plivo phone number and see how the inbound call is forwarded.
For more information about creating a PHLO application, see the PHLO Getting Started guide. For information on components and their variables, see the PHLO Components Library.
Here‘s how to use Plivo XML to forward calls.
Plivo requests an answer URL when the call is answered (step 4) 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 forwards the call using the Dial XML element.
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 Python development environment and a web server and safely expose that server to the internet.
Create a file called
forward_call.py and paste into it this code.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 from flask import Flask, request, make_response, Response from plivo import plivoxml app = Flask(__name__) @app.route('/forward_call/', methods=['GET', 'POST']) def forwardcall(): response = plivoxml.ResponseElement() response.add( plivoxml.DialElement().add( plivoxml.NumberElement('<destination_number>'))) // call wll be forwarded to this number return(response.to_string()) if __name__ == '__main__': app.run(host='0.0.0.0', debug=True)
Replace the destination number placeholder with an actual phone number (for example, 12025551234).
Save the file and run it.
$ python forward_call.py
Associate the Python application 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
Forward Call. Enter the server URL you want to use (for example
https://<yourdomain>.com/forward_call/) in the
Answer URL field and set the method to
POST. Click Create Application to save 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
From the Plivo Application drop-down, select
Forward Call (the name we gave the application).
Click Update Number to save.
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 forward the call according to the instructions in the XML document the server provides.