I can respect the many reviews. The DX600A not understand. Certainly the Syncroniation is using QuickSync not pleasant (frequent crashes, etc.), but if you have the phone Once installed and configured correctly to his taste, is in a small home office a powerful phone.
Installation, company product update, networking, Faxeinbindung - no problem and done within minutes.
At last we now have three (!!!) answering machine in one device available (private, company, etc.). Thanks Extension Assignment no problem.
I highly recommend this phone.
Perhaps a tip: Make absolutely sure that before Syncronisation both in the phone are entered properly (Telephony), as well as Quicksync the country and area codes. Otherwise, the numbers are in the phone with dual code (004949 ...)
A star I subtract but because the buttons are not illuminated and the sync software will cost a lot of nerves.