ISDN trace T300 / T500

You can make an ISDN D-channel trace on the T300 / T500 using the tool SFDCH.jar

For creating the trace do the following:

1.     Make an SSH connection to the PBX and login as root.
2.     On the command line, start the trace using the command: dchmon
3.     Do your test-calls
4.     For stopping the D-channel trace, simply hit CTRL-C
5.     Select the output and copy this in the tool SFDCH tool

Click on decode to analyse the trace.

The following picture shows you how the physical lines can be matched to the numbers that are shown in the D-channel-Analyzer .

Status ISDN line
Active Point to MultiPoint line: at this moment the line is used to make phone calls. Point to Point line: line is idle or the line is used to make phone calls.
Idle Point to Multipoint line: the line is idle, no calls are active, ISDN synchronisation is disabled.
Not configured The line is not configured.