| # |
| # CCITT X.25 Packet Layer |
| # |
| |
| config X25 |
| tristate "CCITT X.25 Packet Layer" |
| ---help--- |
| X.25 is a set of standardized network protocols, similar in scope to |
| frame relay; the one physical line from your box to the X.25 network |
| entry point can carry several logical point-to-point connections |
| (called "virtual circuits") to other computers connected to the X.25 |
| network. Governments, banks, and other organizations tend to use it |
| to connect to each other or to form Wide Area Networks (WANs). Many |
| countries have public X.25 networks. X.25 consists of two |
| protocols: the higher level Packet Layer Protocol (PLP) (say Y here |
| if you want that) and the lower level data link layer protocol LAPB |
| (say Y to "LAPB Data Link Driver" below if you want that). |
| |
| You can read more about X.25 at <http://www.sangoma.com/tutorials/x25/> and |
| <http://docwiki.cisco.com/wiki/X.25>. |
| Information about X.25 for Linux is contained in the files |
| <file:Documentation/networking/x25.txt> and |
| <file:Documentation/networking/x25-iface.txt>. |
| |
| One connects to an X.25 network either with a dedicated network card |
| using the X.21 protocol (not yet supported by Linux) or one can do |
| X.25 over a standard telephone line using an ordinary modem (say Y |
| to "X.25 async driver" below) or over Ethernet using an ordinary |
| Ethernet card and the LAPB over Ethernet (say Y to "LAPB Data Link |
| Driver" and "LAPB over Ethernet driver" below). |
| |
| To compile this driver as a module, choose M here: the module |
| will be called x25. If unsure, say N. |