2N Helios IP Configuration Manual v2.8.1 - Manual (Page 30)

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2N TELEKOMUNIKACE a.s., www.2n.cz
®
5.2.3 Access Cards
Each intercom user can be assigned one or more access RFID cards. Typically, the card
ID is included in the Phone Book together with such user data as phone numbers,
E-mail address and so on. Or, you can define the RFID cards in the Installed Cards list,
which defines a limited number of unassigned cards reserved for visitors, for example.
You can manage – add, remove and modify items – the list of installed cards manually
via the intercom configuration interface. The main advantage of this list is the option to
add/remove using the Service plus/minus cards without accessing the configuration
interface. Unlike the Phone Book with its up to 1999 positions, the Installed Cards may
contain only 20 cards.
To add a card to the list, apply the plus card and then tap the card to be added on the
reader. The RFID card will be added if the list in not full and does not include the card
yet. To remove a card from the list, apply the minus card and then tap the card to be
removed on the reader. The RFID card record will be cancelled and access via this card
will be blocked.
Service cards help you add/remove cards to/from the list. Enter their IDs in the Plus
Card ID and Minus Card ID fields in the
: 6–16 characters including 0–9, Service Cards
A–F (i.e. hexadecimal number of the length of 24 to 64 bits). The number of characters
in the card ID can be different in different card types. However, it holds true that cards
of one and the same type have identically long IDs.
If your external card reader is connected to the intercom via the Wiegand interface, the
card ID is shortened to 6 or 8 characters for transmission (depending on the
transmission parameters). If you apply a card to the reader, you will receive a
complete ID, which is typically longer (8 chars or more). The last 6 or 8 characters,
however, are identical. This is useful for comparing card IDs with the intercom
database: if the IDs to be compared have different lengths, they are compared from
the end and match has to be found in 6 characters at least. If they have identical
lengths, all the characters are compared. This ensures mutual compatibility of the
internal and external readers. Go to the
menu Directory / Access Cards Records /
to identify whether the card was tapped on the internal or external reader.
All cards applied via the reader or the Wiegand interface are recorded. Refer to the
menu for the last 10 cards including the card Directory Access Cards Records / /
ID/type, card tapping time and other information if necessary. With small systems, you
can make a trick to enter card IDs: tap the card on the intercom reader and find it in