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1. Custom Wallpaper Picture Limitations
2. Adding Custom Wallpaper Via URL Download
3. Adding Custom Wallpaper Directly from a PC
4. Adding Custom Wallpaper From USB Drive
5. Adding Custom Wallpaper From YMCS

Custom Wallpaper Picture Limitations

Adding a custom wallpaper is compatible with all color-screen phones and expansion modules. Some smaller or larger pictures may be scaled to fit the screen.

The wallpaper picture format must meet the following requirements:

Adding a Custom Wallpaper Via URL Download

A Yealink device can download an image from a URL to the phone inventory and then display it as the active wallpaper using two different configuration parameters:

wallpaper_upload.url

This first parameter sets the URL that the phone will use to download the file. The value of this parameter is limited to 511 characters. 

Depending on if you're going to display this downloaded photo on the phone, expansion module, or both determines the use of the second configuration parameter(s): 

phone_setting.backgrounds
expansion_module.backgrounds

This configuration selects which photo from the available inventory of photos on the phone's storage to display as the wallpaper on either the phone or the expansion module. The value of these parameters must be the exact file name and file extension of the downloaded image.

Example use:

wallpaper_upload.url="https://i.imgur.com/zpJwMzd.jpg"
phone_setting.backgrounds="zpJwMzd.jpg"

In this case the phone would download the image zpJwMzd.jpg hosted at https://i.imgur.com/zpJwMzd.jpg and then display it on the phone. 

Adding a Custom Wallpaper Directly from a PC

You can upload a formatted photo directly to the phone from any PC on the same network.

Note: You will need to know the phone's IP address, admin password, and have the custom photo already sized and formatted.

In a web browser, navigate to the phone's web UI by entering the IP address of the device in the address bar. Log in using the admin user credentials, and then click on

1. Settings > Preference
2. Click on Custom Wallpaper
3. Then click on + Upload Wallpaper

Once you have chosen the file from your computer it will place the picture in the Custom Wallpaper box.

1. Click on the image and then click Set as wallpaper
2. Then click on Confirm

Adding a Custom Wallpaper From USB Drive 

You can also upload a formatted photo directly to the phone from a USB drive connected to the device.

Note: You must already have an image sized and formatted on a USB drive that is FAT32 or NTFS format.

USB-enabled phones will provide a new menu on the phone when a USB drive is connected. On the phone, navigate to Menu > USB:

Navigate to Browse Photo

Locate the photo you want to use as the wallpaper and tap on Preview

Next, tap on Set As

Then select Set as Wallpaper

Adding a Custom Wallpaper From YMCS

Yealink's YMCS service also allows you to upload and apply a formatted photo to a phone or bank of phones at once.

First, you must add the resource to YMCS:

1. Navigate to Device > Resources > Others
2. Click on + Add

In the side pop-out window, ensure the following fields are configured:

1. Resource Type: Wallpaper

2. Select a file: Select the picture from the PC

3. Resource Name: Custom name for the wallpaper file

4. Site: If you want to limit visibility of this file this to a specific site

5. Then select Save

Next, select the file you want to send to the phone(s), click on Push  in the operation options.

A window will appear, prompting for timing, you can send the file immediately or schedule it to be pushed at a future time. Then click Select Device.

Next,

1. Search for the MAC(s) you would like to send the image to, advanced filters are available

2. Check the selector box(es)

3. Click Save

The phone's LED should flash and the image will appear as the new wallpaper on the phone.