Starting 1.0.1.52, GRP261X adds the feature of Remote Phonebook.
You may use the phonebook example here for testing purposes.
Login to Directory > Remote Phonebook:
a. Phonebook Download Interval: set to 5
b. Remote Phonebook 1: name any
c. HTTP/HTTPS Username: leave empty
d. HTTP/HTTPS Password: leave empty
e. Phonebook XML Server Path: http://tanshiyiing.com/phonebook.xml
f. Save and Apply
g. Go to the phone LCD, navigate to Remote Phonebook, and click Download > You should be able to view the contacts.