Ricoh C2000

Address Function Unit Remarks
680525
PABX detection time for silent period
after ringback tone detected (HIGH)
20 ms
680526
PABX busy tone frequency upper limit
(high byte)
Hz (BCD)
If both addresses contain FF
(H), tone detection is
disabled.
680527
PABX busy tone frequency upper limit
(low byte)
680528
PABX busy tone frequency lower limit
(high byte)
Hz (BCD)
If both addresses contain FF
(H), tone detection is
disabled.
680529
PABX busy tone frequency lower limit
(low byte)
68052A Busy tone ON time: range 1
20 ms
-
68052B Busy tone OFF time: range 1
68052C Busy tone ON time: range 2
68052D Busy tone OFF time: range 2
68052E Busy tone ON time: range 3
68052F Busy tone OFF time: range 3
20 ms
680530 Busy tone ON time: range 4
680531 Busy tone OFF time: range 4
680532 Busy tone continuous tone detection time
680533
Busy tone signal state time tolerance for all ranges, and number of cycles required for
detection (a setting of 4 cycles means that ON-OFF-ON or OFF-ON-OFF must be
detected twice).
Tolerance (±)
Bit 1: 0, Bit 0: 0 = 75% Bits 2 and 3 must always be kept at 0.
Bit 1: 0, Bit 0: 0 = 50% Bits 2 and 3 must always be kept at 0.
Bit 1: 0, Bit 0: 0 = 25%
Bit 1: 0, Bit 0: 0 = 12.5%
Bits 7, 6, 5, 4 - number of cycles required for cadence detection
NCU Parameters
97
4