1# SPDX-License-Identifier: GPL-2.0-only
2config ISDN_CAPI
3	def_bool ISDN && BT
4	help
5	  This provides CAPI (the Common ISDN Application Programming
6	  Interface) Version 2.0, a standard making it easy for programs to
7	  access ISDN hardware in a device independent way. (For details see
8	  <https://www.capi.org/>.)  CAPI supports making and accepting voice
9	  and data connections, controlling call options and protocols,
10	  as well as ISDN supplementary services like call forwarding or
11	  three-party conferences (if supported by the specific hardware
12	  driver).
13
14	  This subsystem requires a hardware specific driver.
15	  See CONFIG_BT_CMTP for the last remaining regular driver
16	  in the kernel that uses the CAPI subsystem.
17
18config CAPI_TRACE
19	def_bool BT_CMTP
20	help
21	  If you say Y here, the kernelcapi driver can make verbose traces
22	  of CAPI messages. This feature can be enabled/disabled via IOCTL for
23	  every controller (default disabled).
24
25config ISDN_CAPI_MIDDLEWARE
26	def_bool BT_CMTP && TTY
27	help
28	  This option will enhance the capabilities of the /dev/capi20
29	  interface.  It will provide a means of moving a data connection,
30	  established via the usual /dev/capi20 interface to a special tty
31	  device.  If you want to use pppd with pppdcapiplugin to dial up to
32	  your ISP, say Y here.
33