> 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/clients/webclient-configuration.md).

# Web App Configuration

In this tutorial we explain how to configure the dial-in number of the Web App.

## PASCOM Training Video

{% embed url="<https://www.youtube.com/watch?v=QxdSqWK9dt8>" %}

## Setup Dial In Number

In order for your participants to be able to attend a conference using the dial-in number, you must configure an **external group number** in the admin web UI. To do this, go to (**Appliance** > **Services** > **Telephony**).

<figure><img src="https://2713225-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVIw0BpSv358R2Pr2HflD%2Fuploads%2Fgit-blob-6e35d3f1c474690ac448b737f26c3166133c8c7b%2Fset_number.en.PNG?alt=media" alt="Setup Dial-in Number" width="60%"><figcaption></figcaption></figure>

As with classic conference rooms, reserve an available telephone number from your SIP trunk number block / DIDs (Direct Inward Dials) and configure it as the external group number. All groups will now use the same dial-in number for external dial-in.

{% hint style="success" %}
Wondering how one dial-in number should work for all groups? The PASCOM system generates a unique PIN for each group. This way, the telephone system knows which group / conference an external participant wants to access.
{% endhint %}

If the **external group number** has not been configured, the feature enabling conference participation via dial-in will be missing.

<figure><img src="https://2713225-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVIw0BpSv358R2Pr2HflD%2Fuploads%2Fgit-blob-043b7e47379bec7e6c33441c19e6d6954557808b%2Fno_number.en.PNG?alt=media" alt="No dial-in number" width="80%"><figcaption></figcaption></figure>


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