Ricoh D025 Service Manual page 1476

Address
PABX busy tone frequency upper
680527
limit (low byte)
PABX busy tone frequency lower
680528
limit (high byte)
PABX busy tone frequency lower
680529
limit (low byte)
68052A Busy tone ON time: range 1
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
680530 Busy tone ON time: range 4
680531 Busy tone OFF time: range 4
Busy tone continuous tone
680532
detection time
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 (±)
680533 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
International dial tone frequency
680534
upper limit (high byte)
SM
Function
Hz (BCD)
20 ms
20 ms
Hz (BCD)
135
NCU Parameters
Unit Remarks
detection is disabled.
If both addresses
contain FF(H), tone
detection is disabled.
-
If both addresses
contain FF(H), tone
D393