These plugins allows users to initate a SIP session from the MacOSX
AddressBook application using Blink Pro version 1.8.2 or newer.

To install the plugins, extract them from the archive and move them to the
following folder:

~/Library/Address Book Plug-Ins/

Then restart the AddressBook application. You may now click on the phone,
email, and URL fields to call them using Blink Pro.