For this solution, we built a machine learning algorithm that is able to detect when a call goes to voicemail by listening to the beep sound with 96% accuracy. When the call is picked up by the answering machine, we perform a speech-to-text action(TTS) which is recorded by the answering machine.
After you deploy the application to Heroku, make a call to the purchased number for the application.
The application will ask to enter a phone number. Enter any phone number you like, as long as it is picked up by voicemail.
To leave a TTS when the answering machine is picked up, run this python script, websocket-client.py locally.
Change the HOSTNAME property to heroku domain for the {app-name}.herokuapp.com
Note, you will need to install the Nexmo python package using:
pip install nexmo
When the voicemail is detected, you will see the following message in your console, when running the websocket-client.py script:
{'uuids': ['xxx'], 'beep_detected': True}
Then, the script plays a TTS saying Answering Machine Detected, and the call will hangup.
Clone the github repo and run:
pip install -r requirements.txt
Create a .env file with the following
MY_LVN={YOUR_NEXMO_NUMBER}
APP_ID={YOUR_NEXMO_APPLICATION_ID}
PRIVATE_KEY={PATH_TO_APPLICATION_PRIVATE_KEY}
You will need to create a Nexmo Application and Purchase a phone number
There are 2 python scripts that need to be run.
The first, websocket-demo.py is the websocket.
Running this script will start the server and detect whenever a answering machine is detected