NCU Parameters
SM 109 D432/D433
D432/D433
Fax Option
Type
C2550/C2530
Address Function Unit Remarks
limit (low byte)
680528
PABX busy tone frequency lower
limit (high byte)
680529
PABX busy tone frequency lower
limit (low byte)
Hz (BCD)
If both addresses
contain FF(H), tone
detection is disabled.
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
20 ms
68052F Busy tone OFF time: range 3
680530 Busy tone ON time: range 4
680531 Busy tone OFF time: range 4
680532
Busy tone continuous tone
detection time
20 ms
-
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
680534
International dial tone frequency
upper limit (high byte)
680535 International dial tone frequency
Hz (BCD)
If both addresses
contain FF(H), tone
detection is disabled.
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