Canon fax basic 2000 Manuale Di Servizio

G3 FACSIMILE COMMUNICATIONS

5–88

• 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.

Fig. 5-64   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

S

PPh

DIS

DCS

Turn-off

Turn-off