Sample thesis documentation billing system

The billing system should provide service to the user, collect user usage records, and generate invoices of each credit expire, each billing cycle depends on the billing type, collect payments and adjust customers' balances as in the following figure: We can divide the system into seven parts as in the following figure:

The billing process involves receiving billing records from various networks, determining the billing rates associated with the billing records, calculating the cost for each billing record, aggregating these records periodically to generate invoices, sending invoices to the customer, and collecting payments received from the customer.

Service is the entity offered by the company and targeted to the customers. Each service is defined by an engineering employee as a service catalog which includes service type, name, billing policy, and its default rating profile. All of these attributes are described later in this article.

Invoice. It is the entity generated by the billing system to inform the customer that he must pay for his service usage or ordering. Each invoice includes the customer account, date of payment, line items of the invoice, and invoice sales taxes. Invoices affect the account debits in the billing system.