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