Canon FAX-L1000 - Manual (Page 234)

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FAX-L1000 Chapter 3: Technical Reference
c-5) Image transmission speed change from the transmitter
The transmitter sends image data, and then the PPh signal, and the receiver returns the PPh
signal to the transmitter. The image transmission speed is then determined by the MPh
sequence sent from both modems.
Figure 3-40 Image Transmission Speed Change from the
Transmitter
S
PP
B1
Image
data
"1"
MPh
ALT
E
flags
MCF
flags
flags
PPh
ALT
PPS-EOM
flags
E
Image
data
MPh
MPh
MPh
NSF
CSI
TSI
flags
CFR
flags
TX RX
PPh
DIS
DCS
Turn-off
Turn-off
S