I'm new to the 3CX world and the Yealink world as well (coming from Cudatel and Polycom 335). I've dug around enough in the templates to find there are logo files being loaded to the phones, but I'm at a loss on how I'd change it to my custom logo. Where on the server would I put the logo file? What size does the logo need to be? After seeing this: wallpaper_upload.url = %%PROVLINKLOCAL%%/logo/yealinkt48.png screensaver.upload_url= %%PROVLINKLOCAL%%/logo/yealinkt48.png I thought I'd be able to find the logos and do my own digging from there, but I can't find those PNGs on my server to save my life. Any assistance would be much appreciated.