Aastra 6755i User Manual page 59

Latin 2 Character Set
The 6755i includes support for ISO 8859-2 (Latin2) of multi-national languages when displaying
and inputing in the IP Phone UI and the Aastra Web UI.
UTF-8 is also compatible with XML encoding on the IP Phones.
The following table illustrates the Latin 2 character set used on the 6755i IP Phone.
Model 6755i IP Phone User Guide 51