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# SPDX-License-Identifier: GPL-2.0-only
menuconfig ISDN_CAPI
tristate "CAPI 2.0 subsystem"
help
This provides CAPI (the Common ISDN Application Programming
Interface) Version 2.0, a standard making it easy for programs to
access ISDN hardware in a device independent way. (For details see
<http://www.capi.org/>.) CAPI supports making and accepting voice
and data connections, controlling call options and protocols,
as well as ISDN supplementary services like call forwarding or
three-party conferences (if supported by the specific hardware
driver).
This subsystem requires a hardware specific driver.
See CONFIG_BT_CMTP for the last remaining regular driver
in the kernel that uses the CAPI subsystem.
if ISDN_CAPI
config CAPI_TRACE
bool "CAPI trace support"
default y
help
If you say Y here, the kernelcapi driver can make verbose traces
of CAPI messages. This feature can be enabled/disabled via IOCTL for
every controller (default disabled).
This will increase the size of the kernelcapi module by 20 KB.
If unsure, say Y.
config ISDN_CAPI_CAPI20
tristate "CAPI2.0 /dev/capi20 support"
help
This option will provide the CAPI 2.0 interface to userspace
applications via /dev/capi20. Applications should use the
standardized libcapi20 to access this functionality. You should say
Y/M here.
config ISDN_CAPI_MIDDLEWARE
bool "CAPI2.0 Middleware support"
depends on ISDN_CAPI_CAPI20 && TTY
help
This option will enhance the capabilities of the /dev/capi20
interface. It will provide a means of moving a data connection,
established via the usual /dev/capi20 interface to a special tty
device. If you want to use pppd with pppdcapiplugin to dial up to
your ISP, say Y here.
config ISDN_CAPI_CAPIDRV_VERBOSE
bool "Verbose reason code reporting"
depends on ISDN_CAPI_CAPIDRV
help
If you say Y here, the capidrv interface will give verbose reasons
for disconnecting. This will increase the size of the kernel by 7 KB.
If unsure, say N.
endif
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