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2
Chapter
Base Station Interface (BSI) Card
The BSI card is designed to support communication between the DCS system and DECT base sta-
tions (DBS). There are three types of BSI card: 3BSI, 4BSI, and 8BSI.
System type
Maximum number of DBSs connected
Maximum number of handsets registered
Maximum number of calls established simultaneously
Maximum number of cards installed in system
Important information
1 There is a priority among PRI, BRI, and some BSI cards in cases where multiple types of
cards are installed in a system. PRI has the highest priority level, BRI has the next level
and BSI the lowest level (PRI > BRI > BSI).
When using a combination of these cards, higher priority cards must be allocated to
lower numbered slots in the system.
2 You cannot install both a 4BSI card and an 8BSI card in the same DCS system.
3 If installing an 8BSI card, remember that it uses two slots, so you cannot insert another
card in the adjacent slot.
3BSI Card
The 3BSI card can only be installed in a Compact II system. The card can connect with up to
three DBSs. Each DBS can have four simultaneous calls and, therefore, 12 simultaneous calls
can be established via one 3BSI card. You can register up to 24 DECT handsets to a single 3BSI
card.
The card is illustrated below and is installed as described in Chapter 4, Installation.
DECT System Components
Characteristics
3BSI
4BSI
Compact II
DCS
3
4
24
32
12
16
1
1
2–1
8BSI
DCS
8
48
32
1
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