AVM FRITZ!Card PnP, Manual

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2 All about FRITZ!Card PnP
12
Fig. 2 Typical Configuration of an ISDN Multiple Connection
There are PBXs which offer digital as well as analog extensions.
You can connect ISDN terminal devices to these digital exten-
sions. Digital extensions are also known as internal S
0
interfaces.
They are an alternative connection facility to external S
0
inter-
faces.
Whether you connect your FRITZ!Card PnP to an internal or external S
0
interface - the ISDN terminal device is not the FRITZ!Card PnP but the
ISDN software on your PC, such as the FRITZ! modules FRITZ!data,
FRITZ!fax and FRITZ!vox for example.
All incoming calls from the ISDN are distinguished not only by
their multiple subscriber number but also by their service indica-
tor. No such differentiation takes place for calls coming in from
the analog network, in which telephone calls and faxes share
the service indicator “voice”. This is why it is important to specify
which call is to be accepted with which MSN by which F
FF FF R R R R RITZ! ITZ! ITZ! ITZ! ITZ!
module or by an ISDN telephone or a PBX. Please refer to the
F
FF FF R R R R RITZ! ITZ! ITZ! ITZ! ITZ! manual or the F FF FF R R R R RITZ! ITZ! ITZ! ITZ! ITZ! online help for the detailed con-
figuration instructions.
Thus, if you wish to receive faxes as well as data with F FF FFR R R R RITZ!Car ITZ!Car ITZ!Car ITZ!Car ITZ!Card d d d d
PnP PnP PnP PnP PnP, you do not need to assign different multiple subscriber num-
bers to these two applications because F
FF FF R R R R RITZ!fax ITZ!fax ITZ!fax ITZ!fax ITZ!fax is respon-
sible for calls with the “voice” indicator and F FF FFR R R R RITZ!data ITZ!data ITZ!data ITZ!data ITZ!data for calls
with the “data” indicator. F FF FFR R R R RITZ!fax ITZ!fax ITZ!fax ITZ!fax ITZ!fax and the answering machine
F FF
FF R
R
R R
RITZ!v ITZ!v
ITZ!v ITZ!v
ITZ!vo o
o o
ox xx
xx both use the same service indicator (“voice”), how-
ever.
Analog telephone with
answering machine
ISDN
telephone
Fax
Cordless
telephone
ISDN system
with ananlog
extensions
S
S
O O
NT NT
S S
O
O
S S
O
O
Computer with
FRITZ!Card PnP