Operation Manual

19
2 Installation
Even with this ”hot Plug & Play” capability, however, you
must first terminate any CAPI applications that are active
and unload the ISDN-Controller B1 USB. Then you may
shut off the ISDN-Controller B1 USB or disconnect it
from its power supply, the ISDN line or from the USB bus.
If you switch on or reconnect the ISDN-Controller B1
USB while the computer is running, you must then reload
it by running the program B1 Load in the ”AVM” program
group.
2.5 Automatic Data Compression in Accordance with V.42bis
The ISDN-Controller B1 USB’s driver software is able
to perform data compression in accordance with the
V.42bis standard. Data compression reduces connection
costs by increasing the effective throughput rate,
shortening the necessary connection time.
After installation, the feature CAPI SoftCompression
X75/V42bis is deactivated by default. Applications that
support the V.42bis standard may still negotiate the use
of compression for the duration of a connection with the
remote system, however.
After you have completed the installation of the driver
software, you may activate V.42bis data compression
using the program B1 Setup. When this option is
activated, the driver software attempts to negotiate the
use of data compression in accordance with V.42bis on
every X.75 connection. You should not use this option,
however, if your application already supports V.42bis
data compression. If you have problems establishing
connections, run the program B1 Setup again and
deactivate the data compression option again.
To activate CAPI SoftCompression X75/V42bis,
proceed as follows:
• Start the program B1 Setup in the ”AVM” program
group.