Issue
Anti-PassBack (APB) Flag functionality
Environment
I/NET Seven
APB
Cause
Anti-Passback flags will not broadcast across links
Resolution
Keep in mind the limitations of the APB flag. The broadcast of the APB flag will not cross links nor is it intended to cross links.
- An NPR is used to connect links to a front end or to another link. The APB flag cannot be broadcast through this device.
- Only doors and controllers on the same Link (CLAN) as the sending device can receive the APB broadcast.
When designing APB systems, ensure that doors for the same zone are all on the same link.
