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Knowledge base centre

How to Change the Logo/Wallpaper on Yealink Handsets

Introduction

 

At the end of this article, you will be able to change the logo/wallpaper on your Yealink handsets to suit your business needs. Depending on the handset's capabilities, the logo/wallpaper will be displayed as text, wallpaper or a screensaver.

Please note: Not all Yealink devices provide the ability to change logo/wallpaper settings.

 

Handset Image Specifications

 

Model

File Format

Maximum Resolution

Colour

Max File Size

CP860

.dob

192 x 64

2 Colour Grayscale

       

CP920 

.dob

248 x 120

2 Colour Grayscale

       

CP960

.jpg/.png/.bmp

720 x 1280

16-bit depth colour

5MB 

EXP50

.jpg/.png/.bmp

320 x 240

16-bit depth colour

5MB

T19P

.dob

132 x 64

2 Colour Grayscale

 

T19P E2 

.dob

132 x 64  

2 Colour Grayscale

 

T20P

Техт

     

T21P

.dob

132 x 64

2 Colour Grayscale

 

T21P E2

.dob

132 x 64

2 Colour Grayscale

 

T22P

.dob

132 x 64

2 Colour Grayscale

100KB

T23

.dob

132 x 64

2 Colour Grayscale

 

T23G

.dob

132 x 64  

2 Colour Grayscale

 

T23P

.dob

132 x 64  

2 Colour Grayscale

 

T26P

.dob

132 x 64

2 Colour Grayscale

100KB

T27G

.dob

240 x 120

2 Colour Grayscale

 

T28P

.dob

236 x 82

2 Colour Grayscale

100KB

T29

.jpg/.png/.bmp

480 x 272

16-bit depth colour

5MB

T29G 

.jpg/.png/.bmp

480 x 272

16-bit depth colour

5MB

T30

.dob

192 x 64  

2 Colour Grayscale

 

T30P

.dob

192 x 64  

2 Colour Grayscale

 

T31

.dob

192 x 64  

2 Colour Grayscale

 

T31G

.dob

192 x 64  

2 Colour Grayscale

 

T31P

.dob

192 x 64  

2 Colour Grayscale

 

T40G

.dob

132 x 64  

2 Colour Grayscale

 

T40P

.dob

132 x 64  

2 Colour Grayscale

 

T41P

.dob

192 x 64

2 Colour Grayscale

 

T41S

.dob

192 x 64  

2 Colour Grayscale

 

T42G

.dob

192 x 64

2 Colour Grayscale

 

T42S

.dob

192 x 64  

2 Colour Grayscale

 

T42U

.dob

192 x 64  

2 Colour Grayscale

 

T43U

.dob

360 x 160  

2 Colour Grayscale

 

T46G

.jpg/.png/.bmp

480 x 272

16-bit depth colour

5MB

T46S

.jpg/.png/.bmp

480 x 272

16-bit depth colour

5MB

T48G

.jpg/.png/.bmp

800 x 480

16-bit depth colour

5MB

T48S

.jpg/.png/.bmp

800 x 480

16-bit depth colour

5MB 

T49G

.jpg/.png/.bmp

1280 x 800

16-bit depth colour

5MB

T52S

.jpg/.png/.bmp

320 x 240

16-bit depth colour

5MB

T53

.dob

360 x 160  

2 Colour Grayscale

 

T53W

.dob

360 x 160  

2 Colour Grayscale

 

T54S

.jpg/.png/.bmp

480 x 272

16-bit depth colour

5MB

T54W

.jpg/.png/.bmp

480 x 272

16-bit depth colour

5MB 

T56A

.jpg/.png/.bmp

1024 x 600

16-bit depth colour

5MB 

T57W

.jpg/.png/.bmp

800 x 480

16-bit depth colour

5MB 

T58A

.jpg/.png/.bmp

1024 x 600

16-bit depth colour

5MB 

VP59

.jpg/.png/.bmp

1024 x 600

16-bit depth colour

5MB 

 

Generating Logos

 

To generate the logo/wallpaper image, you will need appropriate editing software. There is a diverse range of open and closed-source programs available on the market to create and edit images. Closed-source options include Adobe Photoshop and Corel Draw. Alternatively, open-source options include Microsoft Paint or Paint.net. In the below example, paint.net will be used.

 

PNG Colour Logo

 

1. Create a new file using the resolution required by your handset.

 

 

2. When pasting your logo/wallpaper into the new file, ensure that the 'Keep Canvas Size' option is selected.

 

 

3. Arrange your logo/wallpaper image in the canvas created for optimal sizing.

 

 

4. Save the image in PNG format.

 

DOB Grayscale Logo

 

1. Create a new file using the resolution required by your handset.

 

 

2. When pasting your logo/wallpaper into the new file, ensure that the 'Keep Canvas Size' option is selected.

 

 

3. Arrange your logo/wallpaper image in the canvas created for optimal sizing.

 

 

4. Change the colour to Grayscale/Black and White by Selecting ‘Adjustments’ in the menu bar followed by ‘Black & White’.

 

 

5. Save the file as a BMP file type.

6. Download Logo/wallpaper Generator here.

7. Unzip the archive into a central location.

8. In the location where the archive was unzipped, discover and run 'PictureExDemo.exe'.

9. In the application window, select Add and locate the BMP image created above.

 

 

10. Once the logo/wallpaper is added, click on ‘Convert’.

 

 

Note: the application does not display messaging of working or completion of the conversion.

11. In the application location (where PictureExDemo.exe is located), locate folder 'adv'.

 

 

12. Open the folder to locate your logo/wallpaper DOB file.

 

 

Applying the Logo/wallpaper to Yealink Handsets

 

1. Input the Yealink device IP address in your web browser (you can see it by pressing OK when the phone is idle). Then, to log into the handset management interface use the account name: admin and password: admin if it has not been manually changed.

2. Select the 'Phone' tab, then 'Features' and locate the 'upload Logo/wallpaper' section. The below example is from the T28 interface.

 

 

3. Browse to where you saved your logo/wallpaper (PNG or DOB file as required by handset) and click ‘Open’, followed by ‘Confirm’ in the handset management interface.

4. The logo/wallpaper is now ready.

 

Using Auto Provisioning

 

To utilize auto-provisioning, you will need to upload your logo/wallpaper file to a location where the handset has access. This can be local or online. Then insert appropriate code for your handset model into Advanced CFG configuration.

 

 

Modern Devices

E.g. T29G / T31P / T46G / T46S / T48G / T48S / T48S / T52S / T54S / T54W / T57W

 

wallpaper_upload.url = [url]/file_name.extention

phone_setting.backgrounds = file_name.extention

 

 

Older Devices

E.g. T19P / T21P / T23G / T23P / T27G / T40G / T40P / T41P / T41S / T42G / T42S / T53 / T53W

 

lcd_logo.url = [url]/file_name.dob

phone_setting.lcd_logo.mode = 2

 

 

Why do some handsets use DOB format logo/wallpaper files instead of popular BMP, JPG or others?

 

IP phones only use logo/wallpaper files in DOB format, as the DOB format file has a high compression ratio (the size of the uncompressed file compared to that of the compressed file) allowing for use in compressed storage spaces. Tools for converting BMP format to DOB format are available.

 

[[title=How to Change the Logo/Wallpaper on Yealink Handsets]]
[[description=How to manually change the logo/wallpaper on yealink handsets.]]

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