The CDR Invoice module allows you to generate Invoices in Bulk for one or more customers by date range. It is very typical to generate Bulk Invoices on a monthly basis once all the CDR files for that particular month have been processed, assuming you Invoice your customers monthly. In the event that you Invoice your customers on a non-monthly cycle (weekly, daily, etc) the CDR Invoice module allows you to select the date range for the Bulk Invoices allowing you to choose any Bulk Invoice generation cycle you require.
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Before generating Bulk Invoices it is very important to check that all your customers have the correct Auth Codes, Rate Table, Account Plan and Tax Category. If you make any changes to any of the above settings on a customer account, you must reprocess the CDR file before using the CDR Invoice module to Generate Bulk Invoices.