1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 2f59aba2fSArnd Bergmannconfig ISDN_CAPI 3f59aba2fSArnd Bergmann def_bool ISDN && BT 46d979850SArnd Bergmann help 56d979850SArnd Bergmann This provides CAPI (the Common ISDN Application Programming 66d979850SArnd Bergmann Interface) Version 2.0, a standard making it easy for programs to 76d979850SArnd Bergmann access ISDN hardware in a device independent way. (For details see 8*e7fff95cSAlexander A. Klimov <https://www.capi.org/>.) CAPI supports making and accepting voice 96d979850SArnd Bergmann and data connections, controlling call options and protocols, 106d979850SArnd Bergmann as well as ISDN supplementary services like call forwarding or 116d979850SArnd Bergmann three-party conferences (if supported by the specific hardware 126d979850SArnd Bergmann driver). 136d979850SArnd Bergmann 146d979850SArnd Bergmann This subsystem requires a hardware specific driver. 156d979850SArnd Bergmann See CONFIG_BT_CMTP for the last remaining regular driver 166d979850SArnd Bergmann in the kernel that uses the CAPI subsystem. 176d979850SArnd Bergmann 1817f0cd2fSKarsten Keilconfig CAPI_TRACE 19f59aba2fSArnd Bergmann def_bool BT_CMTP 2017f0cd2fSKarsten Keil help 2117f0cd2fSKarsten Keil If you say Y here, the kernelcapi driver can make verbose traces 2217f0cd2fSKarsten Keil of CAPI messages. This feature can be enabled/disabled via IOCTL for 23a982ac06SMatt LaPlante every controller (default disabled). 241da177e4SLinus Torvalds 25d1958f8cSPaul Bolleconfig ISDN_CAPI_MIDDLEWARE 26f59aba2fSArnd Bergmann def_bool BT_CMTP && TTY 27d1958f8cSPaul Bolle help 28d1958f8cSPaul Bolle This option will enhance the capabilities of the /dev/capi20 29d1958f8cSPaul Bolle interface. It will provide a means of moving a data connection, 30d1958f8cSPaul Bolle established via the usual /dev/capi20 interface to a special tty 31d1958f8cSPaul Bolle device. If you want to use pppd with pppdcapiplugin to dial up to 32d1958f8cSPaul Bolle your ISP, say Y here. 33