Ricoh A250 Service Manual page 521

Address
680472 Acceptable ringing signal
frequency: range 1, upper limit
680473 Acceptable ringing signal
frequency: range 1, lower limit
680474 Acceptable ringing signal
frequency: range 2, upper limit
680475 Acceptable ringing signal
frequency: range 2, lower limit
680476 Number or rings until a call is
detected
680477 Minimum required length of the first
ring
680478 Minimum required length of the
second and subsequent rings
680479 Ringing signal detection reset time
(LOW)
Ringing signal detection reset time
68047A
(HIGH)
68047B Not used
to
680480
680481 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.
680482 Bits 0 and 1 - Handset off-hook detection time
Bit 1
0
0
Other
Bits 2 and 3 - Handset on-hook detection time
Bit 3
0
0
Other
Bits 4 to 7 - Not used
680483 Not used
to
6804A0
SM
Function
0 Setting
0 200 ms
1 800 ms
Not used
2 Setting
0 200 ms
1 800 ms
Not used
4-59
NCU PARAMETERS
Unit Remarks
1000/ N Function 06-2
(Hz). (parameter 02).
Function 06-2
(parameter 03).
Function 06-2
(parameter 04).
Function 06-2
(parameter 05).
1 Function 06-2
(parameter 06).
The setting must not be
zero.
20 ms See Note 4.
Function 06-2
(parameter 07).
20 ms Function 06-2
(parameter 06-2).
20 ms Function 06-2
(parameter 09).
Function 06-2
(parameter 10).
Do not change the
settings.
20 ms Factory setting: 500 ms
Do not change the
settings.
A250