Install Plivo SDK
- First, ensure you have the Plivo Python SDK installed. You can do this using pip:
pip install plivo
Initialize the Plivo Client
- To interact with the Plivo API, start by initializing the Plivo client with your `auth_id` and `auth_token`.
import plivo
auth_id = 'YOUR_AUTH_ID'
auth_token = 'YOUR_AUTH_TOKEN'
client = plivo.RestClient(auth_id, auth_token)
Set Up the Voice Call Parameters
- Define the necessary parameters for your voice call, such as the caller ID, source number, destination number, and the answer URL that Plivo should request once the call is answered.
from_number = '+12345678901' # Your Plivo number (caller ID)
to_number = '+19876543210' # Recipient's number
answer_url = 'http://yourserver.com/answer_url' # Your hosted endpoint to handle call logic
Create the Answer URL Script
- Your answer URL needs to return a valid Plivo XML response. This endpoint will define what happens when the call is answered. For instance, you can use Flask to create a simple server that returns an XML response.
from flask import Flask, Response
import plivoxml
app = Flask(__name__)
@app.route('/answer_url', methods=['GET', 'POST'])
def answer_call():
response = plivoxml.ResponseElement()
response.add(plivoxml.SpeakElement('Hello, this is a call from Plivo'))
return Response(response.to_string(), mimetype='application/xml')
Make the Voice Call
- Now that you have set up the parameters and the answer URL, you can initiate the voice call using the Plivo client with the `calls.create` method.
try:
response = client.calls.create(
from_=from_number,
to_=to_number,
answer_url=answer_url
)
print("Call initiated with call UUID:", response['call_uuid'])
except plivo.exceptions.PlivoRestError as e:
print("Error making call:", e)
Handle Call Events with Webhooks
- To monitor call events like ringing, hangup, or answer, set up webhooks. These will notify your server about the state of the call. Update your server configuration to handle events like so:
@app.route('/call_status', methods=['GET', 'POST'])
def call_status():
call_uuid = request.form.get('CallUUID')
call_status = request.form.get('CallStatus')
print(f"Call with UUID {call_uuid} has status {call_status}")
return "OK"
- Remember to configure the `answer_url`, `ring_url`, `hangup_url`, etc., with your server's URLs when you initiate the call.
Secure Your Endpoints
- For production applications, ensure your server endpoints are secure. Validate requests from Plivo by checking signatures, use HTTPS to encrypt data, and apply necessary authentication measures.
