Zoom 4312A - Manual (Page 90)

90
(Synchronization process)
[Synchronization complete]
While the ActiveSync connection is active, synchronization will be performed
whenever information is changed on either the PC or the PDA.
Once a partnership has been established, every time you start your PC (and PDA)
thereafter, a Bluetooth connection will be opened and ActiveSync will synchronize
your information.
Finishing an ActiveSync connection
Tap and hold on "COM7" in the Bluetooth Settings window, and select [ActiveSync Release].