1 # SPDX-License-Identifier: GPL-2.0-only
2 #
3 # CCITT X.25 Packet Layer
4 #
5
6 config X25
7 tristate "CCITT X.25 Packet Layer"
8 help
9 X.25 is a set of standardized networ
10 frame relay; the one physical line f
11 entry point can carry several logica
12 (called "virtual circuits") to other
13 network. Governments, banks, and oth
14 to connect to each other or to form
15 countries have public X.25 networks.
16 protocols: the higher level Packet L
17 if you want that) and the lower leve
18 (say Y to "LAPB Data Link Driver" be
19
20 Information about X.25 for Linux is
21 <file:Documentation/networking/x25.r
22 <file:Documentation/networking/x25-i
23
24 One connects to an X.25 network eith
25 using the X.21 protocol (not yet sup
26 X.25 over a standard telephone line
27 to "X.25 async driver" below) or ove
28 Ethernet card and the LAPB over Ethe
29 Driver" and "LAPB over Ethernet driv
30
31 To compile this driver as a module,
32 will be called x25. If unsure, say N
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