Canon imageCLASS MF4890dw, Service Manual, Page: 494 / 511

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Service Mode > FAX > List of NCU > TONE/PULSE
Service Mode > FAX > List of NCU > TONE/PULSE
List of NUM
• FAX model only
Numeric parameter setting mode
No. Parameter Allowable setting range
01 Not in use
02 RTN transmission criteria X 1 to 99%
03 RTN transmission criteria n 2 to 99 times
04 RTN transmission criteria m 1 to 99 lines
05 NCC pause (before ID code) 1 to 60s
06 NCC pause (after ID code) 1 to 60s
07-09 Not in use
10 T.30 T0 timer 55s principally
11 T.30 T1 timer (for incoming transmission) 0 to 9999 (France=3500,
Others=3000)
12 Maximum incoming lines 0 to 65535 (line)
0: without limitation
13 T.30 EOL timer 500 to 3000
(set to 55s by default)
14 Not in use
15 Threshold between hooking and on-hook 0 to 999
16 Lead time to the first response when switching between
FAX and TEL
0 to 9
17 Duration to activate pseudo-RBT cadence 0 to 999
18 Duration to deactivate pseudo-RBT cadence (short) 0 to 999
19 Duration to deactivate pseudo-RBT cadence (long) 0 to 999
20 Duration to activate pseudo-ring cadence 0 to 999
21 Duration to deactivate pseudo-CI cadence (short) 0 to 999
22 Duration to deactivate pseudo-CI cadence (long) 0 to 999
23 CNG detection level when switching between FAX and
TEL
0 to 7
24 Pseudo-RBT outgoing level when switching between
FAX and TEL
10 to 20 (100v),
0 to 20 (120, 230v)
25 CNG monitor duration while the answering device is
activated
0 to 999
26 No signal detection level while the answering device is
activated
0 to 7
27 Duration to detect preamble of V21 low-speed flag 20 (*10ms)
28-50 Not in use
51 Threshold to detect hook 10 to 9999
53 Set DTMF calling counts when receiving FAX remotely 0 to 9999
54 Set BusyTone outgoing duration when using handset 0 to 9999
55-73 Not in use
78-80 Exclusive use of a developer
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List of NCU
• FAX model only
■
TONE/PULSE
(1)Setting of Tone Parameters
While “#NCU” is displayed, press “OK” key -> Select “#TONE” and press “OK” key so that it
becomes tone parameter setting mode.
(2)Setting of Pulse Parameters
While “#NCU” is displayed, press “OK” key -> Select “#PULSE” and press “OK” key so that
it becomes pulse parameter setting mode.
Item Function Setting range
TONE 01: Tone signal sending time (PSTN) 10 to 9999 (ms)
02: Minimum pause time (PSTN) 10 to 9999 (ms)
PULSE PULSE
FORM
Pulse digit format 0 -> DP (N)
1 -> DP (N+1)
2 -> DP (10-N)
PULSE
NUM
01: Pulse dial speed (10pps) 5 to 300 (x0.1pps)
02: Pulse dial speed (20pps) 5 to 300 (x0.1pps)
03: Pulse dial make ratio 10 to 90 (%)
04: Minimum pause time 10 to 9999 (ms)
■ TONE/PULSE
(1) Bit switch
Bit No. Function 1 0
Bit 0 Frequency detection method Modem Tonal counter
Bit 1
Bit 2
Signal frequency Changed Not changed
Bit 3
Bit 4
Judgment of intermittent signal Start from valid ON
signal
Start from either valid
ON signal or OFF signal
Bit 5
Bit 6
Signal form Continuous Intermittent
Bit 7 Signal detection Detected Not detected
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