ISDN ANALYZER D1080 - messkom.de
ISDN ANALYZER D1080 - messkom.de
ISDN ANALYZER D1080 - messkom.de
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USER’S MANUAL REV. 5 <strong>ISDN</strong> <strong>ANALYZER</strong> <strong>D1080</strong><br />
11. ANALYZING THE SIGNALING<br />
PROTOCOL<br />
Apart from monitoring the physical level, as seen in Chapter 8,<br />
and showing the logical state and level 2 and 3 activities over the<br />
D channel by means of LED’s, it is also possible to analyze the<br />
messages over the signaling channel.<br />
The instrument can be used to analyze the user-network signaling<br />
messages according to ETS 300 125 (level 2) and ETS 300 102-1<br />
(level 3) specifications both over Basic and Primary Access.<br />
The DASS-2 and DPNSS protocols can be <strong>de</strong>co<strong>de</strong>d using the<br />
“PC108 for Windows” PC software.<br />
In the version the capture and analysis of the messages<br />
over the D channel can be STARTED also if the instrument is not<br />
configured in MONITOR mo<strong>de</strong>. This means that the signalling can<br />
still be monitored while carrying out the simulations tests (BER,<br />
TELEPHONE…). This function is enabled if the AUTO1080 option is<br />
present.<br />
! This function is not enabled if the instrument is<br />
configured in Basic Access “U” interface and Monitor<br />
mo<strong>de</strong>.<br />
The and in the MONITOR test do not <strong>de</strong>pend on the<br />
status of the other tests available in the instrument.<br />
CHAPTER 11. ANALYZING THE SIGNALING PROTOCOL 87
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