Installation Guide

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VisionPass - 2019_2000045728
5.1.6 > External database mode (also called polling mode)
When external database mode is activated, the VisionPass terminal does not verify user template in its
local database. This mode is useful when the user templates are stored in external database.
When authentication is initiated on the terminal, the terminal will poll the user ID to external controller. On
polling out the ID, the corresponding template (if exists) is fetched from the external database and is
authenticated against user’s biometric on the terminal. Once the template request is posted to the external
database, the terminal shall wait for the face template from the external database to start authentication.
Further process shall be same as authentication.
Polling Process using buffer:
The user’s input ID will be queued in the terminal’s queue, which is polled by external application.
External application waits for the User ID by polling the buffer. After getting an ID, it will search the
template in database and send template to terminal for further authentication.
The user is authenticated by the external device and granted access accordingly.
VisionPass terminal also has distant commands to retrieve polling buffer status and polling buffer data.
Refer to the VisionPass Host System Interface Specification document.
How to Activate?
External database mode can be activated by setting “ucc.enable_external_database” parameter to 1. Only
an admin user can activate polling mode. You can refer to the VisionPass Host System Interface
Specification document to know how to set this parameter.
5.1.7 > Anti-tamper / anti-pulling switches
Please refer also to “Tamper Switch” section.
These switches are activated as soon as there is enough pressure applied on the terminal against the
wall. They are deactivated as soon as this pressure is not big enough, e.g. when the terminal is pulled out
of the wall.
When the switches are deactivated, the VisionPass terminal acts as required by the related configuration
key (see VisionPass Administration Guide for key configuration description):
 Ignore the event (default): useful during normal maintenance operations.
 Send an alarm message to the Central Access Controller, through the usual channel of the access
control result messages (Wiegand, DataClock, RS485, Ethernet or Wi-Fi™). An alarm switch (relay
contact) is directly available on block terminal «tamper switch pins». Please refer to “Wiring overview”
and to “Tamper Switch” sections.
 Generate an audible alarm signal with the speaker and an alert message on the screen.