Contacts2Phone 1.01 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The application belongs to System Tools. This free Mac app was originally produced by Gerald Flossmann.
From the developer:
Contacts2Phone is a small and convenient utility, which allows owners of Grandstream IP phones like GXP2000 or GXP1405 to export contacts from the Mac OS-X contacts to their phones. Contacts2Phone imports contacts from a given group of the centralized Mac OS-X address book and provides a formatted XML phonebook with its integrated web server.
You may want to check out more Mac applications, such as Synk Professional, Online Backup or AppleXsoft Photo Recovery, which might be similar to Contacts2Phone.