1# SPDX-License-Identifier: GPL-2.0-only 2# 3# ISDN device configuration 4# 5 6menuconfig ISDN 7 bool "ISDN support" 8 depends on NET && NETDEVICES 9 depends on !S390 && !UML 10 ---help--- 11 ISDN ("Integrated Services Digital Network", called RNIS in France) 12 is a fully digital telephone service that can be used for voice and 13 data connections. If your computer is equipped with an ISDN 14 adapter you can use it to connect to your Internet service provider 15 (with SLIP or PPP) faster than via a conventional telephone modem 16 (though still much slower than with DSL) or to make and accept 17 voice calls (eg. turning your PC into a software answering machine 18 or PABX). 19 20 Select this option if you want your kernel to support ISDN. 21 22if ISDN 23 24menuconfig ISDN_I4L 25 tristate "Old ISDN4Linux (deprecated)" 26 depends on TTY 27 ---help--- 28 This driver allows you to use an ISDN adapter for networking 29 connections and as dialin/out device. The isdn-tty's have a built 30 in AT-compatible modem emulator. Network devices support autodial, 31 channel-bundling, callback and caller-authentication without having 32 a daemon running. A reduced T.70 protocol is supported with tty's 33 suitable for German BTX. On D-Channel, the protocols EDSS1 34 (Euro-ISDN) and 1TR6 (German style) are supported. See 35 <file:Documentation/isdn/README> for more information. 36 37 ISDN support in the linux kernel is moving towards a new API, 38 called CAPI (Common ISDN Application Programming Interface). 39 Therefore the old ISDN4Linux layer will eventually become obsolete. 40 It is still available, though, for use with adapters that are not 41 supported by the new CAPI subsystem yet. 42 43source "drivers/isdn/i4l/Kconfig" 44 45menuconfig ISDN_CAPI 46 tristate "CAPI 2.0 subsystem" 47 help 48 This provides CAPI (the Common ISDN Application Programming 49 Interface) Version 2.0, a standard making it easy for programs to 50 access ISDN hardware in a device independent way. (For details see 51 <http://www.capi.org/>.) CAPI supports making and accepting voice 52 and data connections, controlling call options and protocols, 53 as well as ISDN supplementary services like call forwarding or 54 three-party conferences (if supported by the specific hardware 55 driver). 56 57 Select this option and the appropriate hardware driver below if 58 you have an ISDN adapter supported by the CAPI subsystem. 59 60if ISDN_CAPI 61 62source "drivers/isdn/capi/Kconfig" 63 64source "drivers/isdn/hardware/Kconfig" 65 66endif # ISDN_CAPI 67 68source "drivers/isdn/gigaset/Kconfig" 69 70source "drivers/isdn/hysdn/Kconfig" 71 72source "drivers/isdn/mISDN/Kconfig" 73 74config ISDN_HDLC 75 tristate 76 select CRC_CCITT 77 select BITREVERSE 78 79endif # ISDN 80