Specifications
COPYRIGHT
©
1999 CANON INC. CANON SUPER G3 FAX BOARD-F1 REV.0 MAY 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2-69
CHAPTER 2 OPERATION AND TIMING
e. Changing the Data Transmission Speed (by the transmitting device)
After transmitting image data, the transmitting device sends a PPh signal, and the receiving side
also sends back a PPh signal. Thereafter, the MPh sequence is executed by both modems to
determine a new data transmission speed.
Figure 2-419 Changing the Data Transmission Speed (by transmitting device)
Note:
The shaded signals need special attention among those in the procedure.
TX RX
Image
data
Turn-Off
PPh
MPh
MPh
E
flags
TSI
DCS
flags
"1"
S
S
PP
B1
Image
data
Turn-Off
PPS-EOM
ALT
PPh
MPh
MPh
MCF
NSF
CSI
DIS
CFR
E
flags
flags
flags
flags
ALT