|  | # | 
|  | # ISDN device configuration | 
|  | # | 
|  |  | 
|  | menuconfig ISDN | 
|  | bool "ISDN support" | 
|  | depends on NET | 
|  | depends on !S390 | 
|  | ---help--- | 
|  | ISDN ("Integrated Services Digital Network", called RNIS in France) | 
|  | is a fully digital telephone service that can be used for voice and | 
|  | data connections.  If your computer is equipped with an ISDN | 
|  | adapter you can use it to connect to your Internet service provider | 
|  | (with SLIP or PPP) faster than via a conventional telephone modem | 
|  | (though still much slower than with DSL) or to make and accept | 
|  | voice calls (eg. turning your PC into a software answering machine | 
|  | or PABX). | 
|  |  | 
|  | Select this option if you want your kernel to support ISDN. | 
|  |  | 
|  | if ISDN | 
|  |  | 
|  | menuconfig ISDN_I4L | 
|  | tristate "Old ISDN4Linux (deprecated)" | 
|  | ---help--- | 
|  | This driver allows you to use an ISDN adapter for networking | 
|  | connections and as dialin/out device.  The isdn-tty's have a built | 
|  | in AT-compatible modem emulator.  Network devices support autodial, | 
|  | channel-bundling, callback and caller-authentication without having | 
|  | a daemon running.  A reduced T.70 protocol is supported with tty's | 
|  | suitable for German BTX.  On D-Channel, the protocols EDSS1 | 
|  | (Euro-ISDN) and 1TR6 (German style) are supported.  See | 
|  | <file:Documentation/isdn/README> for more information. | 
|  |  | 
|  | ISDN support in the linux kernel is moving towards a new API, | 
|  | called CAPI (Common ISDN Application Programming Interface). | 
|  | Therefore the old ISDN4Linux layer will eventually become obsolete. | 
|  | It is still available, though, for use with adapters that are not | 
|  | supported by the new CAPI subsystem yet. | 
|  |  | 
|  | source "drivers/isdn/i4l/Kconfig" | 
|  |  | 
|  | menuconfig ISDN_CAPI | 
|  | tristate "CAPI 2.0 subsystem" | 
|  | help | 
|  | This provides CAPI (the Common ISDN Application Programming | 
|  | Interface) Version 2.0, a standard making it easy for programs to | 
|  | access ISDN hardware in a device independent way. (For details see | 
|  | <http://www.capi.org/>.)  CAPI supports making and accepting voice | 
|  | and data connections, controlling call options and protocols, | 
|  | as well as ISDN supplementary services like call forwarding or | 
|  | three-party conferences (if supported by the specific hardware | 
|  | driver). | 
|  |  | 
|  | Select this option and the appropriate hardware driver below if | 
|  | you have an ISDN adapter supported by the CAPI subsystem. | 
|  |  | 
|  | if ISDN_CAPI | 
|  |  | 
|  | source "drivers/isdn/capi/Kconfig" | 
|  |  | 
|  | source "drivers/isdn/hardware/Kconfig" | 
|  |  | 
|  | endif # ISDN_CAPI | 
|  |  | 
|  | source "drivers/isdn/gigaset/Kconfig" | 
|  |  | 
|  | source "drivers/isdn/hysdn/Kconfig" | 
|  |  | 
|  | source "drivers/isdn/mISDN/Kconfig" | 
|  |  | 
|  | config ISDN_HDLC | 
|  | tristate | 
|  | select CRC_CCITT | 
|  | select BITREVERSE | 
|  |  | 
|  | endif # ISDN |