---
title: "Link A Sub-Camera to a Door Phone"
slug: "link-a-sub-camera-to-a-door-phone"
updated: 2026-02-10T10:25:07Z
published: 2026-02-10T10:25:07Z
canonical: "knowledge.akuvox.com/link-a-sub-camera-to-a-door-phone"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.akuvox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Link A Sub-Camera to a Door Phone

If the door phone’s built-in camera does not fully cover the access-controlled area, you can link an additional sub-camera to the door phone. Once linked, you can view both the main camera and the sub-camera during live monitoring or calls.

## What You Should Know

1. **Supported devices and firmware versions:**

| **Device** | **Version** |
| --- | --- |
| HyPanel (PS51) | 51.1.39.15 or later |
| HyPanel V2 (PS51 V2) | 251.1.39.4 or later |
| HyPanel Plus (PS52) | 52.1.39.7 or later |
| HyPanel KeyPlus (KS53) | 53.1.39.7 or later |
| HyPanel Pro (PG71) | 71.1.39.44 or later |
| HyPanel Ultra (PH81) | 281.1.39.29 or later |
| HyPanel Supreme (PHX1) | 1001.1.39.27 or later |
| HyPanel Elite 10 (PH59) | 159.1.39.137 or later |
| SmartPanel (X933H) | 933.1.39.10 or later |
| SmartPanel Elite 10 (PH58) | 119.1.39.10 or later |

1. **Supported door phones:**

All Akuvox door phone models running firmware version xxx.30.10.xxx or later are supported.

1. **Supported IP cameras:**

For supported third-party IP camera models, refer to [this guide](https://knowledge.akuvox.com/docs/add-third-party-ip-cameras-to-akubela-system).

1. **Notes and Limitations**

- On KS53, PS51, and PS52, the sub-camera video is available only during calls. Simultaneous display of both cameras is not supported.
- If a door phone is used as a sub-camera and no video is displayed, try disabling RTSP authentication on that door phone.

## Step 1 Add the Sub-Camera to the akubela System

A sub-camera can be either an IP camera or another door phone.

Before linking it to a door phone, make sure the device has already been added to the system via the Cloud or Local Contacts.

### Option A: Add Devices via the Cloud

- **If the sub-camera is an IP camera**

See [here](https://knowledge.akuvox.com/docs/add-third-party-ip-cameras-to-akubela-system) for detailed instructions.

- **If a door phone is used as the sub-camera**

See [here](https://knowledge.akuvox.com/docs/create-a-community-project-on-akubela-cloud" \l "step-2-create-a-project) for detailed instructions.

### Option B: Add Devices to Local Contacts

- **If a door phone is used as the sub-camera**

See [here](https://knowledge.akuvox.com/docs/group-devices-using-auto-discovery) for detailed instructions.

- **If the sub-camera is an IP camera**

1. Obtain the RTSP address and authentication credentials (username and password) from the camera manufacturer.

> [!NOTE]
> **NOTE:**
> 
> For Akuvox door phones, the default RTSP address is: *rtsp://device IP/live/ch00_0*, and the default credentials are *admin/admin*.

1. Log in to the home center’s device web portal, go to **Local Contacts List**, and click **Add**.

![descript](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/link-a-sub-camera-to-a-door-phone-image-zn7s1p6x.png)

1. Enter the **Name**, **RTSP Address**, **Username**, and **Password**, then set the **Contacts Type** to **Camera**.
2. Click **Submit** to save the settings.

![descript](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/link-a-sub-camera-to-a-door-phone-image-oqsweous.png)

## Step 2 Link the Sub-Camera to the Door Phone

1. Log in to the home center’s device web portal, select the target door phone, and click **Link Camera**.

![descript](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/link-a-sub-camera-to-a-door-phone-image-ll3yx4w7.png)

1. Select the sub-camera from the list.

> [!NOTE]
> **NOTE**：
> 
> Only cameras or door phones within the same family can be linked as sub-cameras.

![descript](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/link-a-sub-camera-to-a-door-phone-image-b95mrro4.png)

Once linked, you can view both the door phone camera and the sub-camera during monitoring or calls.

![descript](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/link-a-sub-camera-to-a-door-phone-image-nfht63vp.png)