In January 2018, DC-09 was updated to add an implementation recommendation in annex F:
“Note: It is recommended that the communicator maintain a timebase for message timestamps that is independent of premises equipment times used for other functions (e.g. door control schedules). This prevents a compromised central station receiver from affecting the time base used for security functions at the protected premises.”
While this change does not affect any of North Latitude Technology’s tools, you can be assured that our tools implement the latest DC-09 standard.