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# ISDN device configuration
menu "ISDN subsystem"
config ISDN
tristate "ISDN support"
depends on NET
ISDN ("Integrated Services Digital Networks", called RNIS in France)
is a special type of fully digital telephone service; it's mostly
used to connect to your Internet service provider (with SLIP or
PPP). The main advantage is that the speed is higher than ordinary
modem/telephone connections, and that you can have voice
conversations while downloading stuff. It only works if your
computer is equipped with an ISDN card and both you and your service
provider purchased an ISDN line from the phone company. For
details, read <> on the WWW.
Select this option if you want your kernel to support ISDN.
menu "Old ISDN4Linux"
depends on NET && ISDN
config ISDN_I4L
tristate "Old ISDN4Linux (obsolete)"
This driver allows you to use an ISDN-card for networking
connections and as dialin/out device. The isdn-tty's have a built
in AT-compatible modem emulator. Network devices support autodial,
channel-bundling, callback and caller-authentication without having
a daemon running. A reduced T.70 protocol is supported with tty's
suitable for German BTX. On D-Channel, the protocols EDSS1
(Euro-ISDN) and 1TR6 (German style) are supported. See
<file:Documentation/isdn/README> for more information.
ISDN support in the linux kernel is moving towards a new API,
called CAPI (Common ISDN Application Programming Interface).
Therefore the old ISDN4Linux layer is becoming obsolete. It is
still usable, though, if you select this option.
source "drivers/isdn/i4l/Kconfig"
comment "CAPI subsystem"
depends on NET && ISDN
config ISDN_CAPI
tristate "CAPI2.0 support"
depends on ISDN
This provides the CAPI (Common ISDN Application Programming
Interface, a standard making it easy for programs to access ISDN
hardware, see <>. This is needed for AVM's set
of active ISDN controllers like B1, T1, M1.
source "drivers/isdn/capi/Kconfig"
source "drivers/isdn/hardware/Kconfig"