Agilent Technologies Auroraduet N1726A, User Manual, Page: 248 / 507

Issue 01 - 06/99 5 - 9
Monitoring the Line - Section 1
Using Call Trace to Trigger Monitoring
Automatically
Call Trace allows you to specify a particular condition or
event which, when encountered, automatically triggers
the capture of data to aurora
Duet
's memory.
For example, you might want aurora
Duet
to automatically
capture data when it receives a particular Called Party
Number (CPN). You can specify the CPN as the capture
trigger - when aurora
Duet
receives a frame containing the
matching CPN, it begins capturing events to memory.
You can also filter out unwanted frames and store only
those that match your capture trigger.
Call Trace is available in Monitor mode on both Basic
Rate and Primary Rate links. It supports the following D
Channel protocols:
• ETSI / DSS1
• CorNet N/T
• 1TR6
• TN1R6 N/T
• QSIG (see Notes for QSIG Users , below)
Notes for QSIG Users
The Call Trace application supports QSIG without
segmentation. aurora
Duet
does not decode QSIG Layer 3
message segments.
What is segmentation?
QSIG supports Layer 3 messages which are longer than
260 octets. To send these messages over the line, they
must be split into frames called 'segments'. The receiver
collects these frames and rebuilds the original message.
Chap5s1.PM6 17/06/99, 09:46 9