2-18
Confidential
*1 
Fax communication establishment: Fax communication is established when DIS
(presentation signal of receiving conditions) is received from the calling station, and when
NSS or DCS (communication test signal) is received from the calling station.
Code 1 Code 2 Cause Reference
B0 01 Detect polarity reversion. Section 
4.9.3
B0 02 Unable to receive the next-page data.
B0 03
Unable to receive polling even during turn-around 
transmission due to call reservation.
B0 04 A PC interface error occurred.
BF 01
The [Stop] key was pressed and communication was 
cancelled before fax communication could be 
established
*1
.
BF 02
The [Stop] key was pressed and communication was 
cancelled after fax communication was established
*1
.
C0 01
There is no common modulation mode or the polling has 
failed.
C0 02 JM cannot perform detection.
C0 03 CM cannot perform detection.
C0 04 Unable to perform CJ detection. 
C0 10 V.34 negotiation or training does not end.
C0 11
A modem error was detected during V.34 negotiation or 
training.
C0 20
A modem error was detected during sending of 
commands.
C0 21
A modem error was detected during receiving of 
commands.
C0 22 The control channel connection timed out.
C0 30
A modem error was detected during sending of image 
signals.
C0 31
A modem error was detected during receiving of image 
signals.
E0 01
1300 Hz signal detection failed the counter-
communication inspection.
E0 02
PB signal detection failed the counter-communication 
inspection.
E0 03
A command was not detected from RS232C through 
counter-communication.