# Call Detail Record (CDR) Overview

A Call Detail Record (CDR) captures the details of every inbound and outbound call handled by Cloud Voice, giving you the raw data you need to review call activity and fine-tune how your organization communicates. This page introduces the two ways CDRs can be displayed, the methods you can use to reach them, and how the system manages call-log storage over time.

## CDR views

Cloud Voice can present call logs in either of two views, each offering a different depth of detail.

### Standard View

The Standard View gathers the core metrics for each leg of a call into a single flat layout, so you can scan overall call activity at a glance.

:::note
A "call leg" is one segment of a call between two points, for example the segment from the caller to the phone system, or from the phone system to the person who finally answers. A single call can have several legs when it is transferred, forwarded, or routed through an auto-attendant menu.
:::

![Cloud Voice call logs shown in a flat, single-line Standard View layout](/images/pbx/cdr-standard-view.png)

For details, see [View CDR](/pbx/administrator-guide/view-cdr/) and [Key Metrics for CDR Details](/pbx/administrator-guide/key-metrics-for-cdr-details/).

### Timeline View

The Timeline View lays out each record as a call timeline, listing every event from the moment a call starts to the moment it ends in chronological order. This gives you a granular, step-by-step picture of what happened during the call, which makes troubleshooting faster.

![Cloud Voice call events arranged chronologically in a Timeline View](/images/pbx/cdr-timeline-view.png)

To use the Timeline View, complete the following:

1. Make sure your phone system is running version 84.21.0.117 or later.
2. [Enable the call timeline feature for CDR](/pbx/administrator-guide/enable-call-timeline-for-cdr/).
3. [Access CDRs from the web portal](/pbx/administrator-guide/view-cdr/) and review the [key metrics](/pbx/administrator-guide/key-metrics-for-cdr-details/).

## Ways to access CDRs

Cloud Voice offers two methods for getting to your call records.

- **On demand**: Open CDRs directly in the web portal whenever you need them, and download them as required. See [View CDR](/pbx/administrator-guide/view-cdr/) and [Download CDR from the Web Portal](/pbx/administrator-guide/download-cdr-from-pbx-web-portal/).
- **Scheduled delivery**: Have CDRs sent automatically to specific mailboxes at a time you choose, then download them as needed. Recipients open the record through a download link in the email and can save it as CSV, XLS, PDF, or HTML. See [Schedule Automatic CDR Delivery via Email](/pbx/administrator-guide/schedule-cdr-to-email/).

:::note
Once a scheduled CDR has been sent successfully, you can still pull it directly from the web portal. See [Download Scheduled CDR from the Web Portal](/pbx/administrator-guide/download-scheduled-cdr-from-pbx-web-portal/).
:::

## Automatic cleanup

By default, once the number of stored call logs reaches **200,000**, Cloud Voice begins removing the oldest records to make room for new ones. You can raise or lower that ceiling, or instead define a maximum retention period, to match your needs.

:::caution
Automatic cleanup deletes the oldest call logs permanently, and deleted records cannot be recovered. If your organization needs call history kept for billing, auditing, or compliance, raise the log limit or set a retention period that covers that window, and export or schedule delivery of the records before they age out.
:::

For details, see [Auto Cleanup Settings](/pbx/administrator-guide/auto-cleanup-settings/#auto-cleanup__section_wxp_wx3_4mb).