Canon FAX-L1000 - Manual (Page 230)

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FAX-L1000 Chapter 3: Technical Reference
c) Examples of sequences
The signals in the shaded areas are important in the protocol.
c-1) Late start
Since the receiver cannot detect the CM signal while sending the ANSam signal, it sends
the DIS signal containing the "V.8 protocol" declaration. The transmitter sends the CI
signal to request the receiver to send the ANSam signal again to move to V.8 protocol.
Figure 3-36 Late Start
ANSam
JM
CM
CJ
Connected to the line
DIS
DIS
CNG
(DIS cannot be detected.)
CI
ANSam
TX RX
NSF
CSI
NSF
CSI