Canon G3 - ECM Control Procedure

Appendix
A-3
2.2 ECM Control Procedure
Figure 3 ECM Control Procedure
Calling Side (transmitter)
Called Side (receiver)
Dial
CNG
Line disconnected
Received successfully
Received successfully
Error frame present
Line disconnected
CED
DIS
TRAINING
TRAINING
Transmission of 1st block
(error not generated)
Transmission of 2nd block
(error generated)
Re-transmit of 2nd block
End of transmission of block
Next block present
End of transmission of block
Next block absent
TRAINING
TRAINING
DCS
CFR
PPS-NULL
MCF
PPS-EOP
PPS-EOP
PPR
MCF
DCN
0
1
2
:
255
Frame 0
Frame 1
Frame 2
:
Frame 255
0
1
2
:
255
Frame 0
Frame 1
Frame 2
:
Frame 255
Error generated
Error generated
Frame 1
Frame 2
TCF