14 June, 2002
NCU PARAMETERS
5-81
Service
Tables
Address Function
Unit
Remarks
401F5E
Progress tone detection level, and
cadence detection enable flags
Bit 7 Bit 6 Bit 5 dBm
0 0 0 -25.0
0 0 1 -35.0
0 1 0 -30.0
1 0 0 -40.0
1 1 0 -49.0
Bits 2, 0 - See Note 4.
401F5F
Bit 7 and Bit 6 – Not used
Bit5 1: Polarity detection enabled for Rx (detection time = 500ms)
Bit4 1: Polarity detection enabled for Tx (detection time = 500ms)
Bit 3 to 0 – Not used
401F60
to
401F64
Not used
Do not change these
settings.
401F65
Inter-city dial prefix (high)
BCD
For a code of 0:
401F66
Inter-city dial prefix (low)
BCD
401F65 - FF
401F66 - F0
401F67
to
401F68
Not used
Do not change these
settings.
401F72
Acceptable ringing signal frequency:
range 1, upper limit
Function 08 (parameter 02).
401F73
Acceptable ringing signal frequency:
range 1, lower limit
Function 08 (parameter 03).
401F74
Acceptable ringing signal frequency:
range 2, upper limit
Function 08 (parameter 04).
401F75
Acceptable ringing signal frequency:
range 2, lower limit
1000/ N
(Hz)
Function 08 (parameter 05).
401F76
Number or rings until a call is
detected
1
Function 08 (parameter 06).
401F77
Minimum required length of the first
ring
20 ms
See Note 3. Function 09
(parameter 07).
401F78
Minimum required length of the
second and subsequent rings
20 ms
Function 08 (parameter 08).
401F79
Ringing signal detection reset time
(low)
Function 08 (parameter 09).
401F7A
Ringing signal detection reset time
(high)
20 ms
Function 08 (parameter 10).
401F7B
to
401F80
Not used
Do not change these
settings.
401F81
Interval between dialing the last digit
and switching the Oh relay over to
the external telephone when dialing
from the operation panel in handset
mode.
20 ms
Factory setting: 500 ms