Our usecase in simplified manner: 1) Custom come to our website 2) he see a list of phone numbers 3) he click on a phone number to call.
For above i am reading https://www.twilio.com/docs/quickstart/java/client/outgoing-calls
Our plan is to give this call functionality as a added feature where we will charge end customer what twilio charges us.
Now i need to keep trace of number of call/min each of our customer used. so that i can charge him for the same.
What are the way i can keep track of min/call by each of our customer?
Edit: Is there any api/webhock that can be used to keep track of when a particular call started and ended so that we can save the duration of call and charge for the same.