Question about Yealink T48g

Does anyone here know how to get the name display on the T54W? With my old Gigaset C470 IP it was no problem. I only had to select search.ch in the interface under services and it worked. With the Snom it worked via a script. And with the Yealink??? At search.ch you can get an API key (https://tel.search.ch/api...), but how to implement it in the T54W is a mystery to me. Maybe someone here has a tip for me?

Unfortunately, I cannot contribute anything to connecting the Yealink T48G to UPC. I needed Swisscom support to work with the Swisscom router, because Swisscom does not officially support this device. However, I am very satisfied with the Yealink T48G.

This is to be expected, the device can handle normal SIP accounts. Either provision it in your system before commissioning or set up the account manually in the web interface.