1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyunconfig ISDN_CAPI 3*4882a593Smuzhiyun def_bool ISDN && BT 4*4882a593Smuzhiyun help 5*4882a593Smuzhiyun This provides CAPI (the Common ISDN Application Programming 6*4882a593Smuzhiyun Interface) Version 2.0, a standard making it easy for programs to 7*4882a593Smuzhiyun access ISDN hardware in a device independent way. (For details see 8*4882a593Smuzhiyun <https://www.capi.org/>.) CAPI supports making and accepting voice 9*4882a593Smuzhiyun and data connections, controlling call options and protocols, 10*4882a593Smuzhiyun as well as ISDN supplementary services like call forwarding or 11*4882a593Smuzhiyun three-party conferences (if supported by the specific hardware 12*4882a593Smuzhiyun driver). 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun This subsystem requires a hardware specific driver. 15*4882a593Smuzhiyun See CONFIG_BT_CMTP for the last remaining regular driver 16*4882a593Smuzhiyun in the kernel that uses the CAPI subsystem. 17*4882a593Smuzhiyun 18*4882a593Smuzhiyunconfig CAPI_TRACE 19*4882a593Smuzhiyun def_bool BT_CMTP 20*4882a593Smuzhiyun help 21*4882a593Smuzhiyun If you say Y here, the kernelcapi driver can make verbose traces 22*4882a593Smuzhiyun of CAPI messages. This feature can be enabled/disabled via IOCTL for 23*4882a593Smuzhiyun every controller (default disabled). 24*4882a593Smuzhiyun 25*4882a593Smuzhiyunconfig ISDN_CAPI_MIDDLEWARE 26*4882a593Smuzhiyun def_bool BT_CMTP && TTY 27*4882a593Smuzhiyun help 28*4882a593Smuzhiyun This option will enhance the capabilities of the /dev/capi20 29*4882a593Smuzhiyun interface. It will provide a means of moving a data connection, 30*4882a593Smuzhiyun established via the usual /dev/capi20 interface to a special tty 31*4882a593Smuzhiyun device. If you want to use pppd with pppdcapiplugin to dial up to 32*4882a593Smuzhiyun your ISP, say Y here. 33