From: Beverly Howard on 11 Dec 2009 18:52
First suggest Reposting at
fwiw, my approach would be to export the registry of a new, unused phone
containing default settings.
Then return to the phone and set all of the options such as time zone as
you wish them to be and export a second copy of the registry.
Running a file compare on the two copies should show the keys that can
then be used to preconfigure the phones you need to setup.