21 May, 1999
NCU PARAMETERS
4-47
Service
Tables
Address
Function
Unit
Remarks
81E55E
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.
81E55F
to
81E564
Not used
Do not change these
settings.
81E565
Inter-city dial prefix (high)
BCD
For a code of 0:
81E566
Inter-city dial prefix (low)
BCD
81E565 - FF
81E566 - F0
81E567
to
81E568
Not used
Do not change these
settings.
81E569
Distinctive ring
Hex
00(H): OFF, 01(H): ON
81E56A
Distinctive ring minimum off time
1ms
81E56B
Distinctive ring maximum one cycle
time
20 ms
±
20 ms
81E572
Acceptable ringing signal
frequency: range 1, upper limit
Function 08 (parameter
02).
81E573
Acceptable ringing signal
frequency: range 1, lower limit
Function 08 (parameter
03).
81E574
Acceptable ringing signal
frequency: range 2, upper limit
Function 08 (parameter
04).
81E575
Acceptable ringing signal
frequency: range 2, lower limit
1000/ N
(Hz)
Function 08 (parameter
05).
81E576
Number or rings until a call is
detected
1
Function 08 (parameter
06).
81E577
Minimum required length of the first
ring
20 ms
See Note 6. Function 09
(parameter 07).
81E578
Minimum required length of the
second and subsequent rings
20 ms
Function 08 (parameter
08).
81E579
Ringing signal detection reset time
(low)
Function 08 (parameter
09).
81E57A
Ringing signal detection reset time
(high)
20 ms
Function 08 (parameter
10).
81E57B
to
81E580
Not used
Do not change these
settings.
81E581
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
