FOREWORD Addendum 135g to ANSI/ASHRAE Standard 135-2008 contains a number of changes to the current standard. These modifications are the result of change proposals made pursuant to the ASHRAE continuous maintenance procedures and of deliberations within Standing Standard Project Committee 135. The changes are summarized below. 135-2008g-1. Update BACnet Network Security@ p. 5. In the following document@ language added to existing clauses of ANSI/ASHRAE 135-2008 and addenda is indicated through the use of italics. Where entirely new subclauses are added@ plain type is used throughout. SSPC 135 is especially grateful for the dedicated efforts of the following people in developing this addendum: Carl Neilson and Alexander Andreyev@ Coleman Brumley@ James Butler@ Clifford Copass@ Philippe Goetz@ David Holmberg@ Frank Liese@ and Dave Robin.