# Register a Hikvision Indoor Station to Cloud Voice

Hikvision indoor stations that support SIP can register to Cloud Voice as ordinary extensions, letting them dial and answer calls alongside the rest of your phone system. The steps below use the Hikvision DS-KH6320 as the working example; other SIP-capable models follow the same pattern.

:::note
SIP (Session Initiation Protocol) is the standard telephony protocol Cloud Voice uses to set up and tear down calls. Any device that speaks SIP can register to Cloud Voice with an extension's credentials and then behave like any other phone on the system.
:::

## Before you begin

Make sure the following are true:

- The indoor station supports the SIP protocol. If it does not, it cannot register to Cloud Voice.
- The indoor station has already been activated and added to the iVMS-4200 Client (Hikvision's desktop management application). For guidance, see [Activate intercom video devices](/pbx/integrations/hikvision/manage-hikvision-devices-on-ivms-4200-client/#prepatation__section_wqb_1b1_lpb) and [Add devices to iVMS-4200 Client](/pbx/integrations/hikvision/manage-hikvision-devices-on-ivms-4200-client/#prepatation__section_cpl_sd1_lpb).

## Step 1. Create an extension for the indoor station

Give the indoor station its own extension on Cloud Voice. This extension is the identity (number and credentials) the station will use to register.

1. Sign in to the Cloud Voice web portal and go to **Extension and Trunk > Extension**, then click **Add > Add**.
2. Fill in the user and extension details, or accept the defaults. This example creates SIP extension **1667** for the DS-KH6320 indoor station.

   :::tip
   The defaults are fine for a basic registration. If you have several intercom devices, set a recognizable display name (for example, "Front Door") so calls from the station are easy to identify.
   :::

   
   ![Cloud Voice, new SIP extension form with 1667 assigned to the indoor station](/images/pbx/pbx-indoor-station-extension.png)
3. Click **Save**, then **Apply**.

:::note
You will need this extension's registration user name, registration password, and SIP server domain and port again in Step 2. You can find all of them on the extension's page in Cloud Voice, under its registration or security settings. Keep the page open or note the values down before you continue.
:::

## Step 2. Register the indoor station to Cloud Voice

Point the station at your Cloud Voice server and register it with the extension you just created.

1. Sign in to the iVMS-4200 Client and go to **Device Management > Device**.
2. Click the remote configuration icon ![Remote configuration](/images/pbx/remote-config-icon.png) next to the DS-KH6320 indoor station to open its **Remote Configuration** page.

   ![The Device list in iVMS-4200 with the remote configuration control highlighted next to the indoor station](/images/pbx/indoor-station-configuration-entrance-1.png)
3. Configure the DNS server:
   1. Go to **Network > Advanced Settings**.
   2. In the **DNS Server** section, enter the IP address of your DNS server, then click **Save**.

      ![DNS Server field on the station's Advanced Settings page](/images/pbx/indoor-station-dns.png)

   :::caution
   Set the DNS (Domain Name System) server before you register. In the next step you point the station at Cloud Voice by domain name, and without a working DNS server the station cannot translate that name into an IP address, so registration will fail. Any reachable DNS server the station can use is fine (for example, your local router or a public resolver).
   :::
4. Register the station against extension 1667:
   1. Go to **Network > SIP Server Configuration**.
   2. Select the **Enable** checkbox.
   3. Enter the extension's credentials:

      ![SIP Server Configuration form with the server domain, port, and extension credentials filled in](/images/pbx/indoor-station-register-pce.png)

      - **Server**: Select **Domain Name**.
      - **Server Domain Name**: Enter your Cloud Voice domain name, for example `demo.example.izt.cloud`.
      - **Server Port**: Enter the Cloud Voice SIP registration port, for example `5060`.
      - **Register User Name**: Enter the extension's registration name, for example `1667`.
      - **Password**: Enter the extension's registration password.
      - **Number**: Enter the extension number, for example `1667`.
      - **Display User Name**: Enter the name shown on outgoing calls, for example `1667`.

      :::caution
      The **Server Domain Name** and **Server Port** must match your tenant's SIP registration settings exactly (the values you noted in Step 1). If either is wrong, the station will not register and no error explains why. The registration name and password come from the extension, not from a login you choose here.
      :::

      :::note
      **Register User Name** is the extension's registration name, which is often the same as the extension number but can differ if a separate registration name was set in Cloud Voice. Enter whatever registration name the extension shows.
      :::
   4. Click **Save**. When **Register Status** shows **Registered**, the indoor station is connected to Cloud Voice.

:::tip
If **Register Status** does not reach **Registered**, recheck (in order): the DNS server can be reached, the server domain name and port match your tenant, and the registration user name and password are correct. A single wrong character in any of these prevents registration.
:::