I noticed that MPP phones provisioned with Webex calling cloud have line key labels like this (notice the two handset icons to the left of the DN):
MPP phones provisioned on any platform other than Webex cloud have line key icon like this (notice it's just one handset icon facing down):
I like the Webex line key icons more as it's more clear that it's a line (the first photo at the top I shared - with blue background).
What is the setting in the 8800 series MPP configuration file to change the line key's icon to the 'Webex-style' line icon?