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ISDND(8)		FreeBSD	System Manager's Manual		      ISDND(8)

NAME
     isdnd -- isdn4bsd ISDN connection management daemon

SYNOPSIS
     isdnd [-c configfile] [-d debuglevel] [-f]	[-F] [-l] [-L logfile] [-P]
	   [-r device] [-s facility] [-t terminaltype]
	   [-u charging	unit length] [-m]

DESCRIPTION
     Isdnd is the isdn4bsd package daemon which	manages	all ISDN related con-
     nection and disconnection of ISDN devices supported by the	package.

     The options are as	follows:

     -c	     Use configfile as the name	of the runtime configuration filename
	     for isdnd instead of the default file /etc/isdn/isdnd.rc.

     -d	     If	debugging support is compiled into isdnd this option is	used
	     to	specify	the debugging level, or	better which kind of debugging
	     messages are displayed.  The debugging level is the sum of	the
	     following values:

		   0x001   general debugging.
		   0x002   rates calculation.
		   0x004   timing calculations.
		   0x008   state transitions.
		   0x010   retry handling.
		   0x020   dialing.
		   0x040   process handling.
		   0x080   isdn4bsd kernel i/o calls.
		   0x100   controller and channel busy/free messages.
		   0x200   isdnd.rc configuration file processing.
		   0x400   outgoing call budget	handling.
		   0x800   valid keyword and holiday file processing.

	     The value can be specified	in any number base supported by	the
	     sscanf(3) library routine.

	     In	addition, this option accepts also the character 'n' as	an
	     argument to disable displaying debug messages on the full-screen
	     display.

     -f	     Specifying	this option causes isdnd to enter the full-screen mode
	     of	operation.  When operating in this mode, entering the control
	     character Control-L causes	the display to be refreshed and	enter-
	     ing Carriage-Return or Enter will pop-up a	command	window.
	     Because the isdnd daemon will not listen to messages while	the
	     command window is active, this command window will	disappear
	     automatically after 5 seconds without any command key press.

	     While the command window is active, Tab or	Space advances to the
	     next menu item.  To execute a command, press Return or Enter for
	     the highlighted menu item,	or enter the number corresponding to
	     the item to be executed or	enter the capitalized character	in the
	     menu item description.

     -l	     If	this option is set, logging is not done	via the	syslogd(8)
	     facility but instead is appended to a file.

     -L	     Specifies the name	of the logfile which is	used when the option
	     -l	is set.	 See also the keyword rotatesuffix in the system sec-
	     tion of isdnd.rc(5).

     -P	     This option prints	out the	parsed and verified isdnd configura-
	     tion in the same format as	the isdnd.rc file.  This output	can be
	     used as an	isdnd.rc file.	This feature is	especially useful when
	     debugging an isdnd.rc file	to see,	what the default settings of
	     options are when they are not set in the isdnd.rc input file.

	     The isdnd exits after the printout	is done.

     -F	     This option prevents isdnd	to detach from the controlling tty and
	     become a daemon.

     -r	     In	conjunction with the -t	option,	device specifies a terminal
	     device which becomes the controlling tty for isdnd	and on which
	     the full-screen mode output is displayed.

     -s	     This option may be	used to	specify	the logging facility in	case
	     syslog(3) logging is configured and another facility than the
	     default LOCAL0 facility shall be used.  The facility is to	be
	     specified as an integer in	the range 0-11 or 16-23	(see the file
	     /usr/include/syslog.h).

     -t	     In	conjunction with the -f	and -r options,	terminaltype specifies
	     a terminal	type or	termcap	entry name (such as vt220) for the
	     device used for isdnd full-screen output.	This is	useful if an
	     unused (no	getty running) tty line	is used	for full-screen	output
	     for which no TERM environment variable exists.

     -u	     Specifies the length of a charging	unit in	case the config	file
	     entry keyword unitlenghtsrc is set	to cmdl.

     -m	     If	the isdn daemon	is compiled with local or remote monitoring
	     support, this option disables all monitoring access.  It over-
	     rides the config file option monitor-allowed.

INTERACTION WITH THE KERNEL
     Isdnd communicates	with the kernel	part of	isdn4bsd by receiving status
     and event messages	(read(2) from device /dev/i4b) and by transmitting
     commands and responses (ioctl(2) from device /dev/i4b).

     The messages and message parameters are documented	in the include file
     /usr/include/machine/i4b_ioctl.h.

     Supported command and response messages (ioctls) to the kernel are:
	   I4B_CDID_REQ
		   Request a unique Call Description IDentifier	(cdid) which
		   identifies uniquely a single	interaction of the local D
		   channel with	the exchange.
	   I4B_CONNECT_REQ
		   Actively request a call setup to a remote ISDN subscriber.
	   I4B_CONNECT_RESP
		   Respond to an incoming call,	either accept, reject or
		   ignore it.
	   I4B_DISCONNECT_REQ
		   Actively terminate a	connection.
	   I4B_CTRL_INFO_REQ
		   Request information about an	installed ISDN controller
		   card.
	   I4B_DIALOUT_RESP
		   Give	information about call setup to	driver who requested
		   dialing out.
	   I4B_TIMEOUT_UPD
		   Update the kernels timeout value(s) in case of dynamically
		   calculated shorthold	mode timing changes.
	   I4B_UPDOWN_IND
		   Inform the kernel userland drivers about interface soft
		   up/down status changes.
	   I4B_CTRL_DOWNLOAD
		   Download firmware to	active card(s).
	   I4B_ACTIVE_DIAGNOSTIC
		   Return diagnostic information from active cards.

     Supported status and event	messages from the kernel are:
	   MSG_CONNECT_IND
		   An incoming call from a remote ISDN user is indicated.
	   MSG_CONNECT_ACTIVE_IND
		   After an incoming call has been accepted locally or an out-
		   going call has been accepted	by a remote, the exchange sig-
		   naled an active connection and the corresponding B-channel
		   is switched through.
	   MSG_DISCONNECT_IND
		   A call was terminated.
	   MSG_DIALOUT_IND
		   A userland interface	driver requests	the daemon to dial out
		   (typically a	network	interface when a packet	arrives	in its
		   send	queue).
	   MSG_IDLE_TIMEOUT_IND
		   A call was terminated by the	isdn4bsd kernel	driver because
		   a B-channel idle timeout occurred.
	   MSG_ACCT_IND
		   Accounting information from a network driver.
	   MSG_CHARGING_IND
		   Charging information	from the kernel.

   OUTGOING CALLS
     Currently the only	possibility to trigger an outgoing call	is that	an
     isdn4bsd network driver (ipr_n_) sends a MSG_DIALOUT_IND to the isdnd
     daemon.

     The daemon	requests a new CDID from the kernel by using the I4B_CDID_REQ
     ioctl message, this CDID is now used in all interactions with the kernel
     to	identify this single call until	a disconnect occurs.

     After getting the CDID, the daemon	looks up several additional informa-
     tion in its entry section of the configuration corresponding to that con-
     nection and issues	a I4B_CONNECT_REQ ioctl	message	to the kernel.	The
     kernel now	dials the remote side and if the remote	side accepts the call,
     the kernel	sends a	MSG_CONNECT_ACTIVE_IND to the daemon.

     The call is terminated by either the local	side timing out	or the remote
     side hanging up the connection or the local side actively sending a
     I4B_DISCONNECT_REQ	ioctl message, both events are signaled	to the isdnd
     by	the kernel sending the I4B_DISCONNECT_IND message and the CDID corre-
     sponding to the call is no	longer valid.

   INCOMING CALLS
     Incoming calls are	signaled to the	isdnd by the kernel transmitting the
     MSG_CONNECT_IND message to	the daemon.

     With the information contained in this message, the isdnd searches	the
     entry section of its configuration	database and if	a match	is found, it
     accepts or	rejects	the call or, if	no match is found, it ignores the call
     - all by issuing a	I4B_CONNECT_RESP ioctl message with the	appropriate
     parameters	to the kernel.

     In	case the daemon	decided	to accept the call, the	kernel signals this by
     sending a MSG_CONNECT_ACTIVE_IND message to the daemon.

     The call is terminated by either the local	side timing out	or the remote
     side hanging up the connection or the local side actively sending a
     I4B_DISCONNECT_REQ	ioctl message, both events are signaled	to the isdnd
     by	the kernel sending the I4B_DISCONNECT_IND message and the CDID corre-
     sponding to the call is no	longer valid.

SIGNALS
     Sending a HUP signal to isdnd causes all open connections to be termi-
     nated and the configuration file is reread.  In case aliasfile handling
     was enabled, the aliasfile	is also	reread.

     Sending a USR1 signal to isdnd causes the accounting file and the logfile
     (if logging to a file is used instead of logging via the syslog(3)	facil-
     ity) to be	closed and reopened to make logfile rotation possible.

ENVIRONMENT
     The following environment variables affect	the execution of isdnd:

     TERM    The terminal type when running in full-screen display mode.  See
	     environ(7)	for more information.

FILES
     /dev/i4b		    The	device-file used to communicate	with the ker-
			    nel	ISDN driver subsystem.

     /var/log/messages	    A record of	the actions in case of syslogd logging
			    support.

     /var/log/isdnd.acct    The	default	accounting information filename	(if
			    accounting is configured).

     /var/log/isdnd.log	    The	default	logging	filename (if logging to	a file
			    is configured).

     /var/run/isdnd.pid	    The	process	id of the isdn daemon (also known as
			    "lockfile" to isdnd, preventing multiple invoca-
			    tions of it).

     /usr/local/lib/isdn

     /etc/isdn		    The	directory where	isdnd expects some supplemen-
			    tary data files and	programs for telephone answer-
			    ing	support.

     /etc/isdn/isdnd.rc	    The	default	runtime	configuration file.

     /etc/isdn/isdnd.rates  The	default	unit charging rates specification
			    file.

     /etc/isdn/isdntel.alias
			    The	default	table (if aliasing is enabled) to con-
			    vert phone number to caller's name.

EXAMPLES
     For a first try, the following command should be used to start isdnd in
     foreground	mode for better	debugging the configuration setup:

	   isdnd -d0xf9	-F

     This will start isdnd with	reasonable debugging settings and produce out-
     put on the	current	terminal.  Isdnd can then be terminated	by entering
     Control-C.

     Another example, the command:

	   isdnd -d0xf9	-f -r /dev/ttyv3 -t vt100

     will start	isdnd with reasonable debugging	messages enabled, full-screen
     mode of operation,	full-screen display redirected to /dev/ttyv3 and using
     a termcap entry for vt100 on this display.

DIAGNOSTICS
     Exit status is 0 on success, 1 on error.

SEE ALSO
     i4bing(4),	i4bipr(4), i4bisppp(4),	isdnd.rates(5),	isdnd.rc(5),
     isdntel(8), isdntrace(8), syslogd(8)

BUGS
     Still one or more left.

AUTHORS
     The isdnd daemon and this manual page were	written	by Hellmuth Michaelis
     <hm@FreeBSD.org>.

FreeBSD	9.3			  May 2, 2001			   FreeBSD 9.3

NAME | SYNOPSIS | DESCRIPTION | INTERACTION WITH THE KERNEL | SIGNALS | ENVIRONMENT | FILES | EXAMPLES | DIAGNOSTICS | SEE ALSO | BUGS | AUTHORS

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