2-104 Phaser 6180MFP Multifunction Printer Service Manual
Theory of Operation
Overview of Protocol Monitor
Protocol Monitor allows the user to monitor and print the transmission/
reception records of signals during a G3 fax session that is in conformance to
the ITU-T Recommendation T.30, thereby helping to isolate fax
communication issues.
Protocol Monitor covers the following sequence of a fax session:
■ Sending side: From the detection of incoming CED signal to the
transmission of DCN signal.
■ Receiving side: From the transmission of CED signal to the detection of
incoming DCN signal.
The following example provides a Protocol Monitor report sample with the
descriptions of signals handled by Protocol Monitor.
Time passed
since the
communication
started.
Signal sent
from this
station.
Signal received
from the other
station.
Facsimile control field:
8bit information that
identifies each signal
by type.
Facsimile information field:
Information regarding the
content of each signal.
s6180mfp-430
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