Operation Manual

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2 All About FRITZ!Card USB

software controls the communications processes and the data

transfer itself, including the simultaneous use of the two B

channels, for example. Data interchange in a given ISDN service

is handled by the appropriate data protocol. Both commu-

nication partners must support the same data protocol, such

as HDLC transparent for Internet access, T.30 for fax or X.75 for

ITZ!data.ITZ!data.

ITZ!data.

The

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d Ud U

d U

SB SB

SB drivers support all commonly used data

protocols. The driver passes data to and receives data from the

applications through a standardized interface, Common ISDN

API (CAPI) 2.0. Third-party applications based on CAPI 2.0 can

thus be used with the

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d Ud U

d U

SBSB

SB.

CAPI ensures that any

ISDN hardware can be combined with any ISDN application.

Driver Software Functions

The driver software with its CAPI 2.0 interface processes the

ISDN line’s D channel protocol and provides applications with

all the necessary B channel protocols (X.75, HDLC etc.). In

addition, CAPI 2.0 provides the features SoftCompression X.75/

V.42bis and SoftFax.

CAPI SoftCompression X.75/V.42bis

The

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ITZ!Car

d Ud U

d U

SB SB

SB driver software also supports CAPI-standard

data compression in accordance with V.42bis for X.75 con-

nections. This data compression option yields faster throughput

for substantially lower connection time and costs. Data

compression is switched on and off by the ISDN application,

such as

ITZ!dataITZ!data

ITZ!data.

CAPI SoftFax G3

In addition to digital services,

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ITZ!Car

d Ud U

d U

SB SB

SB can also be used

for the analog service Group 3 telefax (CAPI SoftFax G3).

The driver software permits the use of all CAPI-compatible Win-

dows fax applications over the

ITZ!CarITZ!Car

ITZ!Car

d Ud U

d U

SB. SB.

SB. The ISDN-Con-

troller supports fax sending and receiving at up to 14,400 bps,

behaving the same as a Group 3 fax machine.

The Readme file contains further information on the CAPI SoftCom-

pression and CAPI SoftFax features.