# Forward Hikvision Door Station Calls to the Cloud Voice App

When a visitor rings your Hikvision door station, the call normally lands on the indoor station. If no one is nearby to pick it up, you can have Cloud Voice pass the call on to your Cloud Voice App instead, letting you answer from your desk, browser, or phone. This page shows how to set up that hand-off using the call forwarding rules on the extension.

Once configured, an unanswered door call reaches you on any Cloud Voice App you are signed in to: Mobile, Web, or Desktop.

The setup has two halves. First you tell the PBX (Private Branch Exchange, the phone system that routes your calls) where to send an unanswered door call. Then you set how long the indoor station rings before the PBX treats the call as unanswered and forwards it.

## Before you begin

Make sure you have already [set up communication between the Hikvision door station and indoor station](/pbx/integrations/hikvision/set-up-communication-between-hikvision-door-station-and-indoor-station/). The forwarding described here builds on that working intercom setup.

## Step 1. Set the forwarding destination on the PBX

Tell the extension used by your Hikvision indoor station where to send calls it does not answer.

1. Sign in to the PBX web portal and go to **Extension and Trunk > Extension**.
2. Double-click the extension you created for the Hikvision indoor station to open it.
3. Open the **Presence** tab.
4. In the **Call Forwarding** section, set up the destination for unanswered internal calls:
   1. Select the **No Answer** checkbox.
   2. Set the destination to **Extension**, then choose an extension that is signed in to the Cloud Voice App.

   ![Call forwarding set to forward no-answer calls to an extension](/images/pbx/call-forwarding-2-extension.png)
5. Click **Save**, then **Apply**.

:::note
The **Presence** tab holds the per-extension rules for how calls are handled. The **No Answer** condition fires only when a call rings the indoor station and nobody picks up. It is separate from the **Always** and **When Busy** conditions in the same section, which you are intentionally leaving off here.
:::

:::caution
The destination extension must be signed in to at least one Cloud Voice App (Mobile, Web, or Desktop). If nobody is signed in on that extension, the forwarded call has nowhere to ring and the visitor is left waiting.
:::

:::caution
Clicking **Save** only stages your change. It does not take effect until you also click **Apply**, which pushes the new configuration live on the PBX.
:::

## Step 2. Set the calling duration on the Hikvision indoor station

The calling duration is how long the indoor station rings before the call moves on to the forwarding destination you set in Step 1. When this timer runs out with no answer, the PBX forwards the call to your Cloud Voice App.

1. Sign in to the iVMS-4200 client (Hikvision's device management software) and go to **Device Management > Device**.
2. Next to the DS-KH6320 indoor station, click the remote configuration icon to open the **Remote Configuration** page.

   ![Remote configuration icon for the indoor station in iVMS-4200](/images/pbx/remote-config-icon.png)
3. Go to **Intercom > Time Parameters** and enter the length you want in the **Calling Duration** field.

   ![Calling duration field in the indoor station time parameters](/images/pbx/call-forwarding-time-in-client.png)
4. Click **Save**.

:::note
DS-KH6320 is the example indoor station model used here. Your device list may show a different model name, so pick the indoor station that matches your hardware.
:::

:::tip
This calling duration is the trigger for the whole hand-off, so choose it deliberately. Give the indoor station long enough for someone to answer in person, but keep it short enough that a visitor is not left waiting before the call reaches your Cloud Voice App.
:::

## Result

- If the indoor station does not answer within the calling duration, the door station call is forwarded to your Cloud Voice App.
- While on the call, you can unlock the door by dialing a feature code. A feature code is a short digit sequence (sent as DTMF, the keypad tones your phone produces) that triggers an action on the system. In this example the default unlock code is **1#**.

:::caution
The unlock feature code releases the physical door lock for anyone who dials it while on the forwarded call. Only use it for visitors you can verify, and change the default code (**1#**) if it could be guessed by someone who reaches the door station.
:::