Your access control system behaves differently depending on whether the Mercury host decision handoff feature is enabled or disabled.
You can enable or disable Mercury host decision handoff from the Synergis™ Appliance Portal. Navigate to , and then configure the Disable host decision handoff (offline mode) setting. By default, this setting is disabled, meaning that Mercury host decision handoff is enabled, and that the Synergis™ Cloud Link unit makes the access control decisions.
Refer to the following table to know when your access control system behaves differently, depending on whether Mercury host decision handoff is enabled or disabled.
| Host decision handoff enabled (default) | Host decision handoff disabled | |
|---|---|---|
| Access control decisions made by | Synergis Cloud Link | Mercury controller |
| Card read to door unlock time | 0 to 51 seconds | Under 1 second |
Deleting a cardholder or credential in Security Center
|
Fast | Up to 1 hour for changes to propagate |
Deleting a cardholder or credential in Security Center
|
No difference in behavior | |
| Deactivating a cardholder or credential manually or automatically through its expiration date | No difference in behavior | |
| Revoking access by removing a cardholder from a cardholder group or access
rule, changing schedules, and so on NOTE: Revoking access by deleting or deactivating
a cardholder not included.
|
Fast | Up to 1 hour for changes to propagate |
| Interlock, antipassback, and max occupancy | Supported | The Mercury native area control option must be enabled. |
1 It can take up to 5 seconds, depending on the network conditions.