This guide shows how to create and configure conference calls with a PIN to let multiple people securely connect to a single call. Only participants who have a specified passcode can enter the conference call.
You can make conference 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 conference calling with a PIN 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 Conference Bridge component onto the canvas. When a component is placed on the canvas it becomes a node.
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 to your Plivo phone number and see how callers are added to a conference call that requires PIN validation.
Here’s how to receive a call on a Plivo number and add the caller to a conference call named “demo” after the caller enters a valid PIN.
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
conference_call.py and paste into it this code.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 # -*- coding: utf-8 -*- from flask import Flask, Response, request, url_for from plivo import plivoxml # Message that Plivo reads when the caller dials in welcome_message = "Welcome to the demo. Press 1234 to join the conference" # Message that Plivo reads when the caller does nothing noinput_message = "Sorry, I didn't catch that. Please hang up and try again" # Message that Plivo reads when the caller enters an invalid number wronginput_message = "Sorry, that's an invalid PIN" app = Flask(__name__) @app.route('/conference/', methods=['GET','POST']) def conference(): response = plivoxml.ResponseElement() getinput_action_url = "https://<yourdomain>.com/conference/firstbranch/" response.add(plivoxml.GetInputElement(). set_action(getinput_action_url). set_method('POST'). set_input_type('dtmf'). set_digit_end_timeout(5). set_num_digits(4). set_redirect(True).add( plivoxml.SpeakElement(welcome_message))) response.add(plivoxml.SpeakElement(noinput_message)) return Response(response.to_string(), mimetype='application/xml') @app.route('/conference/firstbranch/', methods=['GET','POST']) def firstbranch(): response = plivoxml.ResponseElement() digit = request.values.get('Digits') if digit == "1234": getinput_action_url = "https://<yourdomain>.com/secondbranch/" response.add( plivoxml.ConferenceElement( 'demo', start_conference_on_enter=False, wait_sound='https://<yourdomain>.com/waitmusic/')) else: response.add_speak(wronginput_message) return Response(response.to_string(), mimetype='application/xml') if __name__ == '__main__': app.run(host='0.0.0.0', debug=True)
Save the file and run it.
$ python conference_call.py
You should see your basic server application in action at http://localhost:5000/conference/.
Associate the Flask 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
Conference Call. Enter the server URL you want to use (for example
https://<yourdomain>.com/conference/) 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
Conference Call (the name we gave the application).
Click Update Number to save.
Make a call to your Plivo number. You should be prompted for a PIN, then placed into a conference after PIN validation.