# Loss of Network Connection for Intercom

When a [Verkada Intercom](https://docs.verkada.com/docs/video-intercom-overview.pdf) loses connectivity, here’s what you can expect:

* If the intercom is in single door controller mode, it continues to run the last known configuration. This means users whose credentials were configured before the lapse in connectivity can still badge in.
* Local streams established while the Intercom was still online continues as usual, as long as the page is not refreshed.
* Access and call events are stored locally onboard.
* When connectivity is restored, the intercom pulls the most recent configuration and uploads the cached access and call events to Verkada Command.

## Impact on calling

Verkada Intercoms require an internet connection to place calls **with one exception**: local Session Initiation Protocol (SIP). If the SIP server is reachable over the local network, then calling functions as usual, even during an internet outage.

{% hint style="danger" %}
**Important**. Any other receiver type ***cannot*** receive calls from, or place calls to an intercom without an internet connection.
{% endhint %}

## Impact on unlocking

If the intercom is operating as a single door controller, or if the unlock output is being used:

* Dual-Tone Multifrequency (DTMF) via local SIP can unlock.
* Badging with valid credentials can unlock.

If the intercom is paired to a door in Command that is wired to a Verkada access controller:

* The Intercom uses cloud unlock and **only the badge readers can unlock**.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help.verkada.com/intercom/troubleshooting/loss-of-network-connection-for-intercom.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.