> For the complete documentation index, see [llms.txt](https://v5cookbook.denovolab.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://v5cookbook.denovolab.com/first-time-setup/check-cdr.md).

# Check CDR

Class 4 provides a very comprehensive filter for you to look up CDRs that you are looking for.  To search for CDRs, you go to Statistics > CDR Lists:

![](https://2160858555-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MYRPW5mw1EmjxhpuA4p%2F-MYWx3KPXZloTgCD0PbC%2F-MYWxX54NzoOFuXikIz2%2Fimage.png?alt=media\&token=21502b1b-5235-4657-8f5f-5ae8bdc63723)

Then, you can see all the search criteria:

![](https://2160858555-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MYRPW5mw1EmjxhpuA4p%2F-MYWx3KPXZloTgCD0PbC%2F-MYWxdRXQVJlYt0UdEKl%2Fimage.png?alt=media\&token=d59808df-ec19-4140-b918-4870d9f28fa3)

Class 4 gives you complete set of fields to view your CDRs:

![](https://2160858555-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MYRPW5mw1EmjxhpuA4p%2F-MYWx3KPXZloTgCD0PbC%2F-MYWxlBERXjsVsMqMp8K%2Fimage.png?alt=media\&token=a1c587b3-64b9-449d-b125-11cd09b4a26a)

If you are search for CDRs within a long period of time, it may take a while.  Class 4 let you run your CDR search job in the background by selecting "Excel CSV" option.

![](https://2160858555-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MYRPW5mw1EmjxhpuA4p%2F-MYWxm-ohG6eDJrAelhH%2F-MYWy4jfiatgeYRoEWQf%2Fimage.png?alt=media\&token=b2228b50-1dcc-41ab-80b7-6dfabe05b2e6)

When this option is selected, your CDR download will be available in the Export tag when ready:

![](https://2160858555-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MYRPW5mw1EmjxhpuA4p%2F-MYWxm-ohG6eDJrAelhH%2F-MYWyHuuwHPLji4e6qom%2Fimage.png?alt=media\&token=5c6fc970-3c95-49f2-9fae-fcc26d526cb8)