> For the complete documentation index, see [llms.txt](https://help.sipgate.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sipgate.de/cloud-telefonanlage/en/using-sipgate/die-sipgate-app/wie-richte-ich-die-browser-erweiterung-in-der-sipgate-app-ein.md).
# How do I set up the browser extension in the sipgate app?
Set up the browser extension for the sipgate app β dial phone numbers directly with click-to-dial.
With the free browser extension for the sipgate app, you can dial phone numbers on websites, in emails, or in CRM systems directly with a click (click-to-dial).
{% hint style="warning" %}
**Important:** The extension works with both the desktop app and the browser app.
{% endhint %}
The extension is available for the following browsers:
* [Google Chrome](https://chromewebstore.google.com/detail/sipgate-app-click2dial/meocbidedjibjdlhfjgplpogklmbhbko)
* [Microsoft Edge](https://microsoftedge.microsoft.com/addons/detail/sipgate-app-click2dial/fbdlfdlmjjigegpaaghlmdndbpeemgob)
* [Mozilla Firefox](https://addons.mozilla.org/de/firefox/addon/sipgate-app-click2dial/)
#### How to install and configure the extension
{% stepper %}
{% step %}
**Open app**
**Open the sipgate app** (in the browser or as a desktop app). Navigate via the gear icon to the **settings**.
{% endstep %}
{% step %}
**Open Click2Dial**
Select the section **Advanced**. Under **Click2Dial** you will find the store links for Chrome, Edge and Firefox.
{% endstep %}
{% step %}
**Install extension**
Click on **Open the store** for the browser of your choice and add the extension. After installation, click-to-dial is ready to use immediately.
{% endstep %}
{% endstepper %}
#### Channel settings
You can choose whether you want to select the desired telephony channel before each call or permanently set a fixed channel (e.g. landline, mobile device or VoIP phone). You also make this setting in the **Advanced β Click2Dial** section.
#### Common problems and notes
Problem: Phone number is prefixed with 20 and cannot be reached
Cause: The linked phone number contains spaces in the βtelβ link. According to RFC 3966, phone numbers in links may not contain spaces.
{% hint style="info" %}
**Tip:** Hover your mouse over the phone number. The link should look like this: ***tel:+49123456789*** (without spaces).
{% endhint %}
Problem: Calling from Google Sheets not possible
Cause: Google interprets formulas such as =+49800... as a calculation operation.
**Solution:** Save the phone number as =+498003301000. Double-click the cell containing the phone number and then click the sipgate logo to start the call.
**Further notes**
The extension also works with connected CRM systems (e.g. HubSpot or Salesforce), provided phone numbers there are linked in tel: format.\
Make sure your browser allows pop-ups for sipgate so that the app can start the call.
If you have any questions or problems, please contact sipgate Support.
---
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