> For the complete documentation index, see [llms.txt](https://help.verkada.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.verkada.com/intercom/configuration/integrate-verkada-intercoms-with-sip/freepbx-configuration-for-verkada-intercoms.md).
# FreePBX Configuration for Verkada Intercoms
Integrate Freepbx with Verkada intercoms
## RingCentral extension set up
{% stepper %}
{% step %}
**Navigate to Applications > Extensions.**
{% endstep %}
{% step %}
**Select Add New SIP \[chan\_pjsip] Extension.**
{% endstep %}
{% step %}
**Fill in the User Extension field with the extension you want to assign to your intercom.**
{% endstep %}
{% step %}
**Fill in the Display Name with the caller ID you want to assign to your intercom.**
{% endstep %}
{% step %}
**Click Submit.**
{% endstep %}
{% step %}
**Click Apply Config and move to Command.**
{% endstep %}
{% endstepper %}
***
## Command set up
{% stepper %}
{% step %}
**In Verkada Command, go to All Products > Intercom.**
{% endstep %}
{% step %}
**Select an intercom and click Settings.**
{% endstep %}
{% step %}
**Under Call, select Add Account.**
{% endstep %}
{% step %}
**Enter your SIP Account Name.**
{% hint style="warning" %}
This is only used for event generation in Command and isn’t used for authentication to Freepbx.
{% endhint %}
{% endstep %}
{% step %}
**Copy the Freepbx elements to the Verkada SIP configuration fields using the following mapping:**
| | |
| ------------------- | --------------------- |
| **Freepbx Element** | **Command Field** |
| Server IP / Domain | Domain / Server \* |
| User Extension | User ID / Extension\* |
| Secret | Password / Secret \* |
| {% endstep %} | |
{% step %}
**Select UDP for Transport Mode.**
{% endstep %}
{% step %}
**Click** **Save.**
You will see a green check mark next to your **SIP Account** information on your intercom’s settings page when the registration is successful.
{% endstep %}
{% endstepper %}
***
## Troubleshooting
When installing Freepbx, users may be prompted to turn on the Sangoma firewall. This may break things like video and dtmf. To disable this, open your Freepbx terminal and run the following command:
```
fwconsole ma delete firewall
```
***
{% hint style="info" %}
**Prefer to see it in action?** Check out the [video tutorial](https://www.youtube.com/watch?v=pgUM7Jwglng).
{% endhint %}
---
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