NAME

isdnd − disconnect idle ISDN/X.25 connections

SYNOPIS

isdnd [−d] [−t timeout] [interval]

DESCRIPTION

isdnd monitors the status of ISDN and X.25 connections.  It logs call status and charging information using the daemon facility and LOG_NOTICE level of syslogd(8). Optionally, isdnd automatically disconnects idle IP connections. 

If the −d option is specified, isdnd monitors and displays the status of all connections without using syslogd(8). Otherwise, isdnd is running as a daemon process. 

−t timeout specifies the idle time (in seconds) before an IP connection automatically is deestablished.  The default is 90 seconds.  If timeout is 0, auto-disconnect is disabled. 

Specify the polling interval.  The default is 2 seconds.  When you specify 0 second with the −d option, isdnd displays the status only once. 

OUTPUT FORMAT

line Line (and channel) identification
timer Timer for auto-disconnect
stat Status of line
init Initialized, not used yet
setup Call arrival
alert Calling/Alerting
conn Connected
disc Disconnecting
rel Released, available for new calls
fail Failure to make call
pkts Number of IP packets (outgoing/incoming)
peeraddr Connected partner’s ISDN/X.25 address
subaddr Sub-address of your partner

FILES

/etc/isdnsconfiguration file
/etc/isdnd.pidprocess ID of the isdn daemon
/usr/lib/locale/LC_MESSAGES/C/isdn.causes
 diagnostics messages

SEE ALSO

isdncall(8), isdndisc(8), x25call(8), x25disc(8), syslog(8)

BUGS

Programs utilising TCP’s keep-alive messages may interfere with isdnd, in particular in case of very short (less than TCPTV_KEEPINTVL) or very long (more than TCPTV_KEEP_IDLE) timeout values (see <netinet/tcp_timer.h>).  This may for instance impact users of rlogin(1) who stay logged in via ISDN/X.25 for more than 2 hours without any I/O-activity.

isdnd may miss transient status changes since it only checks the status every interval seconds. 

NEWS-OSRelease 4.1C