1 # SPDX-License-Identifier: GPL-2.0-only
3 # Old ISDN4Linux config
9 bool "Support synchronous PPP"
13 Over digital connections such as ISDN, there is no need to
14 synchronize sender and recipient's clocks with start and stop bits
15 as is done over analog telephone lines. Instead, one can use
16 "synchronous PPP". Saying Y here will include this protocol. This
17 protocol is used by Cisco and Sun for example. So you want to say Y
18 here if the other end of your ISDN connection supports it. You will
19 need a special version of pppd (called ipppd) for using this
20 feature. See <file:Documentation/isdn/README.syncppp> and
21 <file:Documentation/isdn/syncPPP.FAQ> for more information.
24 bool "Use VJ-compression with synchronous PPP"
27 This enables Van Jacobson header compression for synchronous PPP.
28 Say Y if the other end of the connection supports it.
31 bool "Support generic MP (RFC 1717)"
34 With synchronous PPP enabled, it is possible to increase throughput
35 by bundling several ISDN-connections, using this protocol. See
36 <file:Documentation/isdn/README.syncppp> for more information.
39 bool "Filtering for synchronous PPP"
42 Say Y here if you want to be able to filter the packets passing over
43 IPPP interfaces. This allows you to control which packets count as
44 activity (i.e. which packets will reset the idle timer or bring up
45 a demand-dialled link) and which packets are to be dropped entirely.
46 You need to say Y here if you wish to use the pass-filter and
47 active-filter options to ipppd.
49 config ISDN_PPP_BSDCOMP
50 tristate "Support BSD compression"
53 Support for the BSD-Compress compression method for PPP, which uses
54 the LZW compression method to compress each PPP packet before it is
55 sent over the wire. The machine at the other end of the PPP link
56 (usually your ISP) has to support the BSD-Compress compression
57 method as well for this to be useful. Even if they don't support it,
58 it is safe to say Y here.
61 bool "Support audio via ISDN"
63 If you say Y here, the modem-emulator will support a subset of the
64 EIA Class 8 Voice commands. Using a getty with voice-support
65 (mgetty+sendfax by <gert@greenie.muc.de> with an extension, available
66 with the ISDN utility package for example), you will be able to use
67 your Linux box as an ISDN-answering machine. Of course, this must be
68 supported by the lowlevel driver also. Currently, the HiSax driver
69 is the only voice-supporting driver. See
70 <file:Documentation/isdn/README.audio> for more information.
73 bool "Support AT-Fax Class 1 and 2 commands"
76 If you say Y here, the modem-emulator will support a subset of the
77 Fax Class 1 and 2 commands. Using a getty with fax-support
78 (mgetty+sendfax, hylafax), you will be able to use your Linux box as
79 an ISDN-fax-machine. This must be supported by the lowlevel driver
80 also. See <file:Documentation/isdn/README.fax> for more information.
83 bool "X.25 PLP on top of ISDN"
86 This feature provides the X.25 protocol over ISDN connections.
87 See <file:Documentation/isdn/README.x25> for more information
88 if you are thinking about using this.
91 menu "ISDN feature submodules"
94 tristate "isdnloop support"
95 depends on BROKEN_ON_SMP
97 This driver provides a virtual ISDN card. Its primary purpose is
98 testing of linklevel features or configuration without getting
99 charged by your service-provider for lots of phone calls.
100 You need will need the loopctrl utility from the latest isdn4k-utils
101 package to set up this driver.
103 config ISDN_DIVERSION
104 tristate "Support isdn diversion services"
106 This option allows you to use some supplementary diversion
107 services in conjunction with the HiSax driver on an EURO/DSS1
110 Supported options are CD (call deflection), CFU (Call forward
111 unconditional), CFB (Call forward when busy) and CFNR (call forward
112 not reachable). Additionally the actual CFU, CFB and CFNR state may
115 The use of CFU, CFB, CFNR and interrogation may be limited to some
116 countries. The keypad protocol is still not implemented. CD should
117 work in all countries if the service has been subscribed to.
119 Please read the file <file:Documentation/isdn/README.diversion>.
123 comment "ISDN4Linux hardware drivers"
125 source "drivers/isdn/hisax/Kconfig"