Functions of the Driver Software
FRITZ!Card – 5 How Does FRITZ!Card Work
37
The following diagram illustrates how the individual compo-
nents of FRITZ!Card interact:
FRITZ!Card functional diagram
Functions of the Driver Software
A basic-rate ISDN line is equipped with three channels: two
B channels and one D channel. The B channels are used for
data transmission such as faxes. The program, e.g., FRITZ!fax
or FRITZ!data, uses the D channel to communicate with the
digital exchange. Among the information transferred via this
channel are connection charges. The driver software pro-
cesses the D-channel protocol of the ISDN line and puts all
required B-channel protocols (X.75, HDLC, etc.) at the dispos-
al of the applications. CAPI 2.0 also provides SoftCompres-
sion X75/V42bis, SoftModem and SoftFax G3.
COMMON-ISDN-API 2.0
FRITZ!Card PCMCIA
B-channel protocols (digital):
X.75, HDLC transparent,
V.110, V.120, T.90, ISO 8208 (X.25)
AVM
NDIS
WAN
CAPI
Driver
AVM
ISDN
CAPI
Port
Driver
FR
IT
Z
!d
a
ta
FR
IT
Z
!fa
x
FR
IT
Z
!f
o
n
CAPI
SoftFax G3
C A P I
CAPI
SoftModem
V32
O
n
lin
e
s
o
ft
w
a
re
Ot
h
e
r ISD
N
s
o
ft
war
e
ba
se
d
on
CA
P
I
CAPI Soft-
Compression
X75/V42bis
FR
IT
Z
!w
e
b
AVM
ISDN
TAPI
Services
for CAPI
Internet Service Provider
and applications like
Exchange/
Explorer/Browser/Outlook
Содержание FRITZ!Card PCMCIA
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