Sam Ravnborg | 6a2e9b7 | 2005-07-11 21:13:56 -0700 | [diff] [blame] | 1 | # |
| 2 | # CCITT X.25 Packet Layer |
| 3 | # |
| 4 | |
| 5 | config X25 |
| 6 | tristate "CCITT X.25 Packet Layer (EXPERIMENTAL)" |
| 7 | depends on EXPERIMENTAL |
Arnd Bergmann | 6de5bd1 | 2010-09-11 18:00:57 +0200 | [diff] [blame] | 8 | depends on BKL # should be fixable |
Sam Ravnborg | 6a2e9b7 | 2005-07-11 21:13:56 -0700 | [diff] [blame] | 9 | ---help--- |
| 10 | X.25 is a set of standardized network protocols, similar in scope to |
| 11 | frame relay; the one physical line from your box to the X.25 network |
| 12 | entry point can carry several logical point-to-point connections |
| 13 | (called "virtual circuits") to other computers connected to the X.25 |
| 14 | network. Governments, banks, and other organizations tend to use it |
| 15 | to connect to each other or to form Wide Area Networks (WANs). Many |
| 16 | countries have public X.25 networks. X.25 consists of two |
| 17 | protocols: the higher level Packet Layer Protocol (PLP) (say Y here |
| 18 | if you want that) and the lower level data link layer protocol LAPB |
| 19 | (say Y to "LAPB Data Link Driver" below if you want that). |
| 20 | |
| 21 | You can read more about X.25 at <http://www.sangoma.com/x25.htm> and |
| 22 | <http://www.cisco.com/univercd/cc/td/doc/product/software/ios11/cbook/cx25.htm>. |
| 23 | Information about X.25 for Linux is contained in the files |
| 24 | <file:Documentation/networking/x25.txt> and |
| 25 | <file:Documentation/networking/x25-iface.txt>. |
| 26 | |
| 27 | One connects to an X.25 network either with a dedicated network card |
| 28 | using the X.21 protocol (not yet supported by Linux) or one can do |
| 29 | X.25 over a standard telephone line using an ordinary modem (say Y |
| 30 | to "X.25 async driver" below) or over Ethernet using an ordinary |
| 31 | Ethernet card and the LAPB over Ethernet (say Y to "LAPB Data Link |
| 32 | Driver" and "LAPB over Ethernet driver" below). |
| 33 | |
| 34 | To compile this driver as a module, choose M here: the module |
| 35 | will be called x25. If unsure, say N. |
| 36 | |
| 37 | |