Canon FAX-L1000 - Manual (Page 233)

3-89
FAX-L1000 Chapter 3: Technical Reference
c-4) Image transmission speed change from the receiver
The receiver returns to the PPh signal in response to the Sh signal from the transmitter.
The image transmission speed is then determined by the MPh sequence sent from both
modems.
Figure 3-39 Image Transmission Speed Change from the
Receiver
S
PP
B1
Image
data
"1"
ALT
PPh
E
flags
PPR
flags
Sh
PPS-NULL
flags
Image
data
ALT
ALT
MPh
MPh
E
MPh
MPh
TX RX
PPh
Turn-off
Turn-off
Sh
S