Canon fax basic 2000 Manuales De Servicio

5–125

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G3 FACSIMILE COMMUNICATIONS

Fig. 5-85   Example of ECM Communications

Dial

CED

DCS

MCF

CNG

DIS

CFR

PPS-NULL

PPR

PPS-EOP

MCF

PPS-EOP

DCN

0
1
2

255

Frame 0
Frame 1
Frame 2

Frame 255

0
1
2

255

Calling Side (transmitter)

Called Side (receiver)

Training

Transmission of 1st block
(error not generated)

End of transmission
of block
Next block present

Transmission of 2nd
block (error generated)

Training

Training

Frame 0
Frame 1
Frame 2

Frame 255

End of transmission
of block
Next block absent

Re-transmit of 2nd block

Frame 1
Frame 2

Line disconnected

Line disconnected

Call
Response

Received successfully

Error generated
Error generated

Error frame present

Received successfully