If you want to understand patterns you're seeing in your data, run a standard detail report. With it, you can get more details about your telecom use and costs. (If you want to see high-level trends, view a view a standard summary billing report or create a custom summary billing report.)
You can edit any of the reports or create a custom detail billing report to better suit your needs. By default, when you run a summary or detail report, Bill Analyst tries to extract data from every account you have permission to, which increases processing time and creates bigger reports. If you want to see a report immediately (and not wait for an order to be processed), you can reduce the number of records it contains by using the hierarchy/level feature or creating a filter to search for specific service IDs and account numbers.