Network Time Source
The 'Network Time Source' represents the external time source the Connected Vehicle Service Monitor System uses as the basis for time. This is likely implemented as a Stratum-2 Network Time Server that is 2 steps removed from a basic time source (e.g., atomic clock).
This physical object does not have any functionality defined in ARC-IT, as it exists outside the system functional boundary.
This physical object is included in the following Service Packages:
|Network Time Source||time||Center|
|Network Time Source||time||Connected Vehicle Roadside Equipment|
|Network Time Source||time||Data Distribution System|
|Network Time Source||time||Field|
|Network Time Source||time||Service Monitor System|
This physical object has the following security levels for the associated service packages.
|Physical Object Security|
|Security Class||Confidentiality||Integrity||Availability||Service Package|
|Class 3||Not Applicable||High||Moderate||Location and Time|
Currently, there are no standards associated with the physical object itself though the interfaces may have standards associated with them. For standards related to interfaces, see the specific information flow triple pages.