L-DEVICES(5)							File Formats Manual						      L-DEVICES(5)

NAME

       L-devices - UUCP device description file

DESCRIPTION

       The  L-devices  file  is  consulted by the UUCP daemon uucico(8) under the direction of L.sys(5) for information on the devices that it may
       use.  Each line describes exactly one device.

       A line in L-devices has the form:

       Caller  Device  Call_Unit  Class  Dialer  [Expect  Send]....

       Each item can be separated by any number of blanks or tabs. Lines beginning with a `#' character are comments; long lines can be  continued
       by appending a `' character to the end of the line.

       Caller denotes the type of connection, and must be one of the following:

       ACU     Automatic call unit, e.g., autodialing modems such as the Hayes Smartmodem 1200 or Novation ``Smart Cat''.

       DIR     Direct connect; hardwired line (usually RS-232) to a remote system.

       DK      AT&T Datakit.

       MICOM   Micom Terminal switch.

       PAD     X.25 PAD connection.

       PCP     GTE Telenet PC Pursuit.

       SYTEK   Sytek high-speed dedicated modem port connection.

       TCP     Berkeley TCP/IP or 3Com UNET connection. These are mutually exclusive.  Note that listing TCP connections in L-devices is superflu-
	       ous; uucico does not even bother to look here since it has all the information it needs in L.sys(5).

       Device is a device file in /dev/ that is opened to use the device. The device file must be owned by UUCP, with access modes of 0600 or bet-
       ter. (See chmod(2)).

       Call_Unit  is  an  optional  second  device  file name.	True automatic call units use a separate device file for data and for dialing; the
       Device field specifies the data port, while the Call_unit field specifies the dialing port.  If the Call_unit field is unused, it must  not
       be left empty.  Insert a dummy entry as a placeholder, such as ``0'' or ``unused.''

       Class is an integer number that specifies the line baud (for dialers and direct lines) or the port number (for network connections).

       The  Class  may	be  preceded by a non-numeric prefix.  This is to differentiate among devices that have identical Caller and baud, but are
       distinctly different.  For example, ``1200'' could refer to all Bell 212-compatible modems, ``V1200'' to Racal-Vadic modems, and  ``C1200''
       to  CCITT  modems,  all	at  1200  baud.  Similarly, ``W1200'' could denote long distance lines, while ``L1200'' could refer to local phone
       lines.

       Dialer applies only to ACU devices. This is the "brand" or type of the ACU or modem.

       DF02    DEC DF02 or DF03 modems.

       DF112   Dec DF112 modems. Use a Dialer field of DF112T to use tone dialing, or DF112P for pulse dialing.

       att     AT&T 2224 2400 baud modem.

       cds224  Concord Data Systems 224 2400 baud modem.

       dn11    DEC DN11 Unibus dialer.

       hayes   Hayes Smartmodem 1200 and compatible autodialing modems.  Use a Dialer field of hayestone to use tone dialing,  or  hayespulse  for
	       pulse dialing.  It is also permissible to include the letters `T' and `P' in the phone number (in L.sys) to change to tone or pulse
	       midway through dialing.	(Note that a leading `T' or `P' will be interpreted as a dialcode!)

       hayes2400
	       Hayes Smartmodem 2400 and compatible modems.  Use a Dialer field of hayes2400tone to use tone dialing, or hayes2400pulse for  pulse
	       dialing.

       novation
	       Novation ``Smart Cat'' autodialing modem.

       penril  Penril Corp ``Hayes compatible'' modems (they really aren't or they would use the hayes entry.)

       rvmacs  Racal-Vadic 820 dialer with 831 adapter in a MACS configuration.

       va212   Racal-Vadic 212 autodialing modem.

       va811s  Racal-Vadic 811s dialer with 831 adapter.

       va820   Racal-Vadic 820 dialer with 831 adapter.

       vadic   Racal-Vadic 3450 and 3451 series autodialing modems.

       ventel  Ventel 212+ autodialing modem.

       vmacs   Racal-Vadic 811 dialer with 831 adapter in a MACS configuration.

       Expect/Send is an optional Expect/Send script for getting through a smart port selector, or for issuing special commands to the modem.  The
       syntax is identical to that of the Expect/Send script of L.sys.	The difference is that the L-devices script is used before the	connection
       is made, while the L.sys script is used after.

FILES

       /etc/uucp/L-devices
       /etc/uucp/UUAIDS/L-devices    L-devices example

SEE ALSO

       uucp(1), uux(1), L.sys(5), uucico(8)

4.3 Berkeley Distribution					 October 22, 1996						      L-DEVICES(5)