Change disolay name

[MBrandenburg]

Hi,

in our company we use Yealink T41P phones and the phone software Placetel. This automatically sets up the connection to the phones once the Mac address is given. In particular, it sets the VoIP-name as the display name. However, when I change the VoIP-name, the display name does not change. But for other reasons, actually, the display name should be different from the VoIP-name.

So my question is just if it is possible to change the display name of the phones.

Just to be clear what I mean: The display has (in the middle) a clock, underneath it the date, and underneath it the display name of the user.