How can we bill customer through Subscription Billing basing on Usage

Summary

How can we bill customer through Subscription Billing basing on Usage

Content

Hi, Say a Telecom business, is planning for billing customers basing on their usage. IF a Customer has $50 plan, he will be billed $0.50 per minute, similarly if a customer has $100 plan, he will be billed $0.10 per minute. So Billing based on usage. How can this functionality be achieved? Please advise.

Version

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