1# 2# CCITT X.25 Packet Layer 3# 4 5config X25 6 tristate "CCITT X.25 Packet Layer (EXPERIMENTAL)" 7 depends on EXPERIMENTAL 8 depends on BKL # should be fixable 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 38