Bumping this thread.
Having the same question. Have a N720 system up and running, works perfectly on 3CX, but without the phonebook.
Meanwhile, 3CX now officially supports the N510 including phonebook, wondering if there is a N720 solution upcoming as well.
As far as I am aware, even though the N510 is in the supported list, I believe it does not pull the contact list from 3CX, the only option you have I think is LDAP.
Hi,
I also use the N720. Like you I would also like to have the Phonebook work properly. However more than that I'd like to see the N720 on the Supported list for 3CX. I started a Post on the ideas forum in hope that I would find others who also want the N720 supported. It hasn't taken off yet. Maybe some of you are interested. Here is the link: https://www.3cx.com/community/threads/cti-conrol-for-multiple-telephones.47854/#post-193176
Please note that even if these phones are supported by 3CX the phonebook will not work as these phones load the phonebook directly to handset and not the base station. For these phones to have a working phonebook with 3CX they need to load the phonebook to the base station which they cannot do.