Canon PowerShot G3, Error Code List, Page: 281 / 310

Appendix
A-4
Figure 4 V.8/V.34 Control Procedure
2.3 V.8/V.34 Control Procedure
Calling Side (transmitter) Called Side (receiver)
Dial
CNG
JM
ANSam
CM
INFO0c
B
S
S
PP
PPh
ALT
E
E
NSF
NSS
TSI
DCS
S
S
PP
B1
Image
data
Turn-Off
Sh
Sh
Sh
Sh
ALT
ALT
MCF
DCN
E
E
PPS-EOP
"1"
CSI
DIS
CFR
flags
flags
flags
flags
PPh
ALT
MPh
MPh
MPh
MPh
V.34
V.8
TRN
B
B
L1
L2
A
A
A
INFO0a
INFO0h
CJ
Network interaction
(Phase 1)
Declares the usable modulation mode.
Declares that V.34 capability exists on
each machine, and transfers the V.34
procedures with phase 2.
After declaring the modem's modulation
speed capacity, etc. to each machine,
the receiving side determines the
modulation speed based on the results
of a probing signal output by the
transmitting side.
The transmitting side outputs a training
signal to determine the image transmission
speed.
The optimum image transfer speed is
determined by the condition in which the
training signal is received.
The pre-message protocol is done in the
same way as a normal T.30, at 1200bps.
The training signal is output with the
determined parameters, and continues to
transmit the image data.
The post-message protocol is done in the
same way as a normal T.30, at 1200bps.
Probing
(Phase 2)
Control channel
start-up
(Phase 4)
Control channel
Primary channel
equalizer training
(Phase 3)
Primary channel
resyncronization
procedure
Control channel
resyncronization
procedure
(Communication end
procedure)
Image data
flags
flags
flags
"1"
Line disconnected Line disconnected