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1.4.4 Access Allowed Mode
This mode can be switched on by pressing the PERMIT access button and is effective only for
one authentication. In this mode the LED of the relevant reader pulses with green once per second.
In this mode a holder of any credential can achieve access regardless of the purpose of the
credential (Master, Unlocking. Locking, Operating, etc.) even if access rules are violated or the
credential is not enrolled in the controller.
The Access Allowed mode terminates just after granting access for a presented credential or the
expiry of 10 s timeout (if no credential was presented) as well as after the second press on the
PERMIT button. The reader returns to its long-term mode in which it was before: Controlled Access,
Access Locked, or Free Pass.
The PERMIT button is supposed to be situated near a guard and is uses for those cases when it
is necessary to approve granting access with logging passage with a credential without access rights or
with registered access rule violations (for time & attendance purpose or correct operation of
antipassback rules).
1.4.5 Busy State
Until a current access procedure is completed the controller generates an internal Busy signal.
For such operation modes as Turnstile, Boom Barrier, and Mantrap, while this signal is in effect no
access is provided for a next credential. In the operation modes One Entrance/Exit Door and Two
Entrance Doors an internal Busy signal is ignored.
In spite of internal Busy signals an external Busy signal can be sent to the BUSY input of the
controller. Its effect on each of the readers is defined by a relevant configuration parameter of the
reader and doesn’t depend on the operation mode of the controller. The BUSY input / output is
designed to synchronize operation of several controllers in case of arranging sophisticated access
points and to connect a presence detector (occupancy sensor) in a mantrap, vehicle loop detector at a
parking lot etc.
If a credential is presented when an internal or external Busy signal is being active, then access
cannot be achieved, please try to access later.
1.5 Two-Factor Authentication
One of the ways to strengthen protection against unauthorized access is two-factor
authentication when a user is required to present two credentials rather than a single one (for example,
a Proximity card and a PIN).
In case of two-factor authentication a procedure of granting access or operating alarm loops
begins with presenting a first credential – a Primary Code. After that the controller proceeds to the
mode of waiting for presenting an additional code, with the reader LED flashing with green five times
per second. Within 30 seconds a second credential should be presented – the Extra Code.
If the presented code does not coincide with the Extra Code then the controller generates an
Access Denied message with the Extra Code Error attribute. If a correct additional code is presented
then the authentication is considered to be completed successfully and the controller or grants access,
or proceeds to authentication of a next user (if a two-person rule or three-person rule is in effect), or
arms or disarms the alarm loops operated by the presented credential.
Necessity to apply two-factor authentication is programmed for every group of users (for every
access level) individually for each reader by setting the configuration parameter Two-Factor