diff options
Diffstat (limited to 'usr.sbin/i4b/isdntrace/isdntrace.8')
| -rw-r--r-- | usr.sbin/i4b/isdntrace/isdntrace.8 | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/usr.sbin/i4b/isdntrace/isdntrace.8 b/usr.sbin/i4b/isdntrace/isdntrace.8 index 5c3011bce539..92ae2e44c092 100644 --- a/usr.sbin/i4b/isdntrace/isdntrace.8 +++ b/usr.sbin/i4b/isdntrace/isdntrace.8 @@ -89,9 +89,11 @@ Run in analyzer mode by using two passive cards and a custom cable which can be build as described in the file .Em cable.txt -in the isdn4bsd source distribution. One card acts as a receiver for the +in the isdn4bsd source distribution. +One card acts as a receiver for the transmitting direction on the S0 bus while the other card acts as a receiver -for the receiving direction on the S0 bus. Complete traffic monitoring is +for the receiving direction on the S0 bus. +Complete traffic monitoring is possible using this setup. .It Fl b switch B channel tracing on (default off). @@ -110,7 +112,8 @@ print layer 1 (I.430) INFO signals to monitor layer 1 activity (default off). switch displaying of Layer 2 (Q.921) frames off (default on). .It Fl n This option takes a numeric argument specifying the minimum -frame size in octets a frame must have to be displayed. (default 0) +frame size in octets a frame must have to be displayed. +(default 0) .It Fl o switch off writing trace output to a file (default on). .It Fl p @@ -133,7 +136,8 @@ Write undecoded binary trace data to a file for later or remote analyzing (default off). .It Fl F This option can only be used when option -P (playback from binary data file) -is used. The -F option causes playback not to stop at end of file but rather +is used. +The -F option causes playback not to stop at end of file but rather to wait for additional data to be available from the input file. .Pp This option is useful when trace data is accumulated in binary format (to @@ -156,7 +160,8 @@ When the USR1 signal is sent to a process, the currently used logfiles are reopened, so that logfile rotation becomes possible. .Pp -The trace output should be obvious. It is very handy to have the following +The trace output should be obvious. +It is very handy to have the following standard texts available when tracing ISDN protocols: .Pp .Bl -tag -width Ds -compact -offset indent @@ -167,7 +172,8 @@ ISDN D-channel layer 2 protocol description. .It Ar Q.931 ISDN D-channel layer 3 protocol description. .It Ar 1TR6 -German-specific ISDN layer 3 protocol description. (NOTICE: decoding +German-specific ISDN layer 3 protocol description. +(NOTICE: decoding of the 1TR6 protocol is included but not supported since i dont have any longer access to a 1TR6 based ISDN installation.) .El @@ -176,7 +182,7 @@ The .Nm utility automatically detects the layer 3 protocol being used by looking at the -Protocol Discriminator (see: Q.931/1993 pp. 53). +Protocol Discriminator (see: Q.931/1993 pp.\& 53). .Sh FILES .Bl -tag -width daddeldi -compact .It Pa /dev/i4btrc<n> |