Interphase Tech iSPAN 5535 PRI - Manual (Page 103)

Appendix B: Using the SynWatch Utility
iSPAN PRI PCI ISDN Users Guide 83
the ISDN connection phase. For example, if a RAS connection
fails (during either dial-in or dial-out), the first channel to
watch is the ISDN D channel.
To activate watching on an ISDN D channel:
1. Select the channel in the configuration panel of the
Synwatch dialog.
A list of watch modes appears:
Figure B-2. ISDN D Channel Watch Modes
2. To activate frame logging, select one of the watch
modes:
– Select LAPD to see detailed descriptions of
signalling frames.
– Select LAPD (reduced) to see brief descriptions of
signalling frames.
– Select Hexadecimal Dump to see Hexadecimal
dump of signalling frames (in Hexadecimal Dump
mode, frames are not analyzed).