# Call detail records (CDR)
**Call History** provides a log of all incoming, outgoing, and internal calls. It is located under "**Telephony" -> "Call History"**.
Call detail records (CDR)
## Benefits
The Call History feature in MikoPBX enables users to:
* Display **all** calls;
* Filter calls **based on criteria**;
* Visually identify **missed calls** from the call log;
* Download or listen to call recordings.
Each entry in the call log contains information about:
* The caller’s phone number (**Who**);
* The recipient’s phone number (**To Whom**);
* The date and time of the call (**Call Date**);
* The duration of the call (**Duration**) – this excludes time spent on greetings or announcements.
Calls marked in red are **missed calls**. Their duration is logged as zero, and these calls cannot be played back:
Missed calls
For answered calls, users can listen to or download the recording. Call recordings are downloaded locally to your PC in **.mp3** format.
Listen to the recording function
Each call log entry provides detailed information about the participants involved.
Detailed information
## Filters
{% hint style="info" %}
To apply a filter, press **Enter** after entering the search criteria.
{% endhint %}
The search bar in the Call History page supports the following filters:
1. **Phone Number** Filter
You can search using either an internal staff number or an external client number.
Filter by Phone number
2. **Two Phone Numbers** Filter
Enter two phone numbers separated by a space. For example, entering "74952293042 302" will display all **answered** calls between these numbers. Answered calls are those with a duration greater than **0** seconds, excluding greeting time.
Filter by 2 numbers
3. **Date** Filter
When opening the Call History, the log defaults to the current date. To filter for a specific period, select the date range and click **Apply**.
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