Structure Of Binary Signals - Canon FACSIMILE BASIC 2000 Service Manual

6.8

Structure of Binary Signals

There are various types of binary signals, and I am sure that you now
understand that they each have special meanings. Here, let's describe the
structure of binary signals in further detail.
Binary signals consist of a "preamble signal" that prefixes the binary sig-
nal and "binary coded information". Binary coded information comprises
one or multiple frames (HDLC frame). Each frame comprises some
"sequences" and "fields." This structure is called an HDLC structure.
NSS Transmission
Signal (including user name and maker code) that communicates to the
other party that transmission will be performed using a function other
than that recommended by
that are not provided in DCS).
TSI Transmission
Signal for communicating the telephone number of the transmitter to the
other party.
Transmitting
side
CED
Receiving
side
Flag Flag
Address
sequence sequence
field
Fig. 5-78 Structure of Binary Signal
G3 FACSIMILE COMMUNICATIONS
Reception
ITU-T (functions unique to manufacturer
Reception
Preamble
Binary coded information
NSF CSI DIS
Facsimile Facsimile
Control
control field information field
field
HDLC information field
Binary signal
Binary signal
NSS TSI DCS
Frame
Flag
checking
sequence
sequence
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