NCU PARAMETERS 14 June, 2002
5-82
Address Function Unit Remarks
401F82 Bits 0 and 1 - Handset off-hook detection time
Bit 1 0 Setting
0 0 200 ms
0 1 800 ms
Other Not used
Bits 2 and 3 - Handset on-hook detection time
Bit 3 2 Setting
0 0 200 ms
0 1 800 ms
Other Not used
Bits 4 to 7 - Not used
401F83 Bits 7 to 5 – Not used
Bit 4 – DTMF detection
0: Disabled
1: Enabled
Bits 3 to 0 – Not used
Do not change the setting.
If bit 4 is set to 0, Fax On
Demand and Transfer
operation using DTMF are
disabled.
401F84 Bits 7 to 5 – DTMF minimum on detection time
Bit 7 Bit 6 Bit 5 Setting
0 0 0 30 ms
0 0 1 40 ms
0 1 0 80 ms
0 1 1 140 ms
Bits 4 to 2 – DTMF minimum off detection time
Bit 4 Bit 3 Bit 2 Setting
0 0 0 30 ms
0 0 1 40 ms
0 1 0 80 ms
0 1 1 140 ms
Bits 1 and 0 – Not used
Fax On Demand and
Transfer operations:
Incoming DTMF tones
shorter than the setting will
not be detected.
401FA1 Acceptable CED detection frequency
upper limit (high byte)
401FA2 Acceptable CED detection upper
frequency upper limit (low byte)
BCD
(Hz)
If both addresses contain
FF(H), tone detection is
disabled.
401FA3 Acceptable CED detection frequency
lower limit (high byte)
401FA4 Acceptable CED detection upper
frequency lower limit (low byte)
BCD
(Hz)
If both addresses contain
FF(H), tone detection is
disabled.
401FA5 CED detection time 20 ms
± 20 ms
Factory setting: 200 ms
401FA6 Acceptable CNG detection frequency
upper limit (high byte)
401FA7 Acceptable CNG detection upper
frequency upper limit (low byte)
BCD
(Hz)
If both addresses contain
FF(H), tone detection is
disabled.
401FA8 Acceptable CNG detection frequency
lower limit (high byte)
401FA9 Acceptable CNG detection upper
frequency lower limit (low byte)
BCD
(Hz)
If both addresses contain
FF(H), tone detection is
disabled.
401FAA Not used Do not change these
settings.
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