> For the complete documentation index, see [llms.txt](https://docs.pascom.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pascom.net/en/operations/system/cli.md).

# Server CLI (TUI) Interface

Access the TUI (Text User Interface) interface of the PASCOM server.

## Access to the PASCOM CLI Interface

The PASCOM CLI is a text-based (TUI) interface in which you can use various commands for debugging. The basis of this interface forms the Asterisk core system, which is integrated in the PASCOM telephone system.

To access the CLI interface, click on the small **black shell symbol** in the upper left corner of the Admin Web Interface.

![pascom Shell](https://2713225-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVIw0BpSv358R2Pr2HflD%2Fuploads%2Fgit-blob-d8b6eb119f91ab5519f2142e26b96042d4263ed3%2Fpascom_shell.PNG?alt=media)

You are now in the PASCOM CLI

![pascom CLI](https://2713225-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVIw0BpSv358R2Pr2HflD%2Fuploads%2Fgit-blob-d3bfacf3073e42080a91616f447aac08648184ed%2Fpascom_cli.PNG?alt=media)

From here you can use Asterisk commands to debug the PASCOM telephone system, evaluate telephone calls, read out channels and connections and much more.

[Asterisk: The Future of Telephony](http://www.asteriskdocs.org/en/2nd_Edition/asterisk-book-html-chunk/index.html)

**Astersik Tutorial Series incl. SIP Debugging (only EN)**

{% embed url="<https://www.youtube.com/watch?v=ZYq51DDYZS0>" %}

{% hint style="info" %}
**Root access to the PASCOM cloud phone system is not possible**
{% endhint %}


---

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