C•CURE 800/8000 Software Configuration Guide - Tyco Security ...

AntipassbackHow Global Antipassback Works During Communications FailureWhen the host loses connection with an owner cluster master, or memberloses communication with the master, the user defined Failure Mode isinvoked and antipassback is enforced locally on the cluster in which the cardis presented. There are two Failure Modes:No access: where non owners will not admit the card if they cannotcommunicate with the owner.Local: where the iSTARs decide on antipassback based on informationavailable to the cluster locally. If sufficient information in not available, thenthe card is admitted. Relevant local information can be:• Cards movement history• Layout of doors and areas• iSTARs that are in communications failureIf you configure a No Access failure mode, and a card is denied accessbecause the owner is in communications failure, you can allow access at thepart of the system that is communication with the Host by resetting the cardsantipassback data via the Monitoring Station. The APB Reset Card button inthe Personnel Information dialog box allows you to force the clusters thatcontinue to communicate with the host to grace and area lockout grace thecard. After you reset the antipassback, the iSTAR at which the card is nextpresented becomes the owner of the card. For the length of communicationsfailure, this card will have two owners.The old owner who is still incommunications failure, will continue to admit the card.You can use this button even if the owner is communicating with the host. Inthis situation the owner will lose ownership and card is graced and arealockout graced. The iSTAR at which the card is next presented assumesownership. When both owners and non owners are communicating a cardcannot have two owners.Restoring CommunicationIf communication is restored only between the cluster master and themember, then antipassback will only work locally within that cluster. If thecommunication is restored between the master and the host, then theC•CURE 800/8000 Software Configuration Guide 2–41