User guide

Interface Cards 43
Installation
The following overview shows the interface cards available.
The following pressure terminal diagrams show the assignment of
pressure terminals for one type of card only. If you use different
types of card at the same time, the actual assignment will be a
combination of several of these diagrams.
Interface card Slot Features
12
Forum 523 / 525
Media Gateway Card
z Internal connection to
Ethernet switch via the
slot
Forum 523 / 525 Card
4 digital extensions:
4 x U
pn
z U
pn
also usable for
DECT-RFP
Forum 523 / 525 Card
8 digital extensions:
8 x U
pn
z U
pn
also usable for
DECT-RFP
Forum 523 / 525 Card
2S0/T0, 6digital
extensions:
2 x S
0
and 6 x U
pn
z U
pn
also usable for
DECT-RFP
S
0
are internally/
externally switchable
Forum 523 / 525 Card
2S0/T0, 6analogue
extensions:
2 x S
0
and 6 x a/b
z S
0
are internally/
externally switchable
Forum 523 / 525 Card
4S0/T0:
4 x S
0
z S
0
are internally/
externally switchable
Forum 523 / 525 Card
4 analogue extensions:
4 x a/b
z
Forum 523 / 525 Card
8 analogue extensions:
8 x a/b
z