Specifications

CAPI SoftFax
72 ISDN-Controller B1 PCI v4.0 – 14 AVM System Architecture
compression for all ISDN connections so that the controller
will attempt to negotiate V.42bis data compression with the
remote site for all X.75 connections, independent of the
CAPI application. If the remote site does not perform data
compression, the data will be transmitted without compres-
sion. This process takes place in the background and is not
apparent to the user.
The “Changing the Settings” sections for each operating
system describes how to enable or disable V.42 data com-
pression after installation. For Novell NetWare, this infor-
mation is contained in the sections “Configuring the ISDN-
Controller B1 PCI v4.0 with Stand-Alone CAPI” on page 45
and “Operation of the ISDN-Controller B1 PCI v4.0 with CAPI
for the CAPI Manager” from page 46.
If your computer does not meet the hardware requirements
or if unexpected problems arise during data exchange with
remote sites without V.42 capability, it is advisable to dis-
able data compression in both the driver and the applica-
tion.
If you have problems establishing a connection, try dis-
abling data compression.
14.5 CAPI SoftFax
The CAPI SoftFax feature allows the ISDN-Controller to send
and receive faces on two B channels simultaneously at up
to 14.4 kbit/s. The ISDN-Controller B1 PCI v4.0 sends and
receives like a G3 fax device.
The following fax protocols are supported:
 V.17 (14.4 kbit/s)
 V.29 (9.6 kbit/s)
 ECM (Error Correction Mode)
 MR/MMR (2D compression)