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Watching ISDN Channels
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Interphase Corporation
Watching ISDN B Channels
N
OTE
Before establishing a call, you cannot know which ISDN B
channel will be used. Therefore, to be sure to capture call
data, you must activate traces for all the ISDN channels.
channel will be used. Therefore, to be sure to capture call
data, you must activate traces for all the ISDN channels.
ISDN B channels are used to transmit data frames after an
ISDN connection is established. The first few data frames
exchanged between local and remote sites correspond to a
second connection phase to allow the establishment of the
upper layer (for example, the PPP protocol).
ISDN connection is established. The first few data frames
exchanged between local and remote sites correspond to a
second connection phase to allow the establishment of the
upper layer (for example, the PPP protocol).
1. To activate watching on one ISDN B channel, select
that channel in the configuration panel of the SynWatch
dialog.
dialog.
To activate watching on all ISDN channels, select the
PRI port related to the adapter (Port #0 or Port #1) in the
configuration panel of the Synwatch dialog.
PRI port related to the adapter (Port #0 or Port #1) in the
configuration panel of the Synwatch dialog.
A list of watch modes appears:
Figure B-3. ISDN B Channel Watch Modes