2 All about FRITZ!Card PnP
11
Fig. 1
FRITZ!Card PnP Functional Diagram
2.4
FRITZ!Card PnP on the ISDN Connection
When your ISDN connection is installed, your ISDN network op-
erator first installs a so-called network terminator (NT). A network
terminator is equipped with two ISDN sockets. Each of these ISDN
sockets is an external S
0
interface.
IIIIIn most cases, an ISDN PBX with analog extensions is connected
to one ISDN socket and a digital terminal device is connected to
the second ISDN socket. Existing analog terminal equipment such
as telephones, cordless telephones, answering machines and
Group 3 fax machines are connected to the extensions of the
PBX. The connected devices are addressed by way of multiple
subscriber numbers (MSN). Each ISDN connection has at least
three MSNs. If you have connected your PBX to one of the ISDN
sockets and your PC containing the F
FF
FF R
R
R
R
R ITZ!Car
ITZ!Car
ITZ!Car
ITZ!Car
ITZ!Card PnP
d PnP
d PnP
d PnP
d PnP to the other
ISDN socket, you will require additional ISDN sockets to connect
other ISDN terminal equipment such as an ISDN telephone (see
gray area in the following Fig. 2).
COMMON-ISDN-API 2.0
FRITZ!Card PnP
B channel protocols (digital):
X75, HDLC, transparent,
V110, V120, T90, ISO 8208 (X25)
AVM
NDIS
WAN
CAPI
Driver
AVM
ISDN
CAPI
Port
Driver
Applications such
as Exchange/
Explorer/
Browser/Outlook
FR
IT
Z!
da
ta
FR
IT
Z
!f
a
x
FR
IT
Z!
c
o
m
FR
IT
Z!
v
o
x
A
d
d
it
ional
C
A
P
I-ba
s
e
d
IS
D
N
s
o
ftw
a
re
O
n
li
n
e
-Softw
a
re
CAPI Soft-
Compression
X75/V42bis
CAPI Soft-
Modem V32
CAPI Soft-
Fax G3
C A P I
