NAME

isdntrace − monitor status of ISDN board

SYNOPSIS

isdntrace [-dev device] [[+|−|=]level] ... 

DESCRIPTION

isdntrace shows the status of the ISDN board, it’s only for administrators.  See the documents listed below to understand the output of isdntrace.  Usually, you don’t have to use this. 

Specify the device using the device option or ISDNDEV environment, the default is /dev/isdn. 

Specify trace level with prefix ‘+’(add),‘−’(disable) or ‘=’(set).  If no prefix exists, default is ‘+’(add). 

normal
normal level (slow+cc+x25+lapb+l3+l2+l2m+l1)

fullfull level except verbose and debug

slowrun slowly not to drop trace information

x25X.25 Call Control

x25pkt
X.25 Data Transmission

lapbLAPB control information

iframeLAPB Information frame

verbose
additional information

debugdebug information

pktpacket between NEWS − ISDN board

ipIP header analysis

cccontrol information between NEWS − ISDN board

errISDN layer3 error information

l3ISDN signalling (Q.931 or 1TR6) information

l2mISDN layer 2 management information

l2ISDN layer 2 (Q.921) information

l1ISDN layer 1 information

offstop trace

SEE ALSO

isdnload(8), CCITT 1988 Q.931, CCITT 1988 Q.921, CCITT 1988 I.430, CCITT 1988 X.25

BUGS

Stop isdntrace, when you run isdnload(8).  Otherwise ISDN board may malfunction. 

When you finish to trace, indicate ISDN board to stop trace by ‘=off’ option. 

The arguments and outputs of isdntrace may be changed without notice. 

NEWS-OSRelease 4.2.1R