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SERVICE TABLES AND PROCEDURES
NCU PARAMETERS
Address
807F2A
Busy tone ON time: range 1
(00672A)
807F2B
Busy tone OFF time: range 1
(00672B)
807F2C
Busy tone ON time: range 2
(00672C)
807F2D
Busy tone OFF time: range 2
(00672D)
807F2E
Busy tone ON time: range 3
(00672E)
807F2F
Busy tone OFF time: range 3
(00672F)
807F30
Busy tone ON time: range 4
(006730)
807F31
Busy tone OFF time: range 4
(006731)
807F32
Busy tone continuous tone
(006732)
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 (±)
807F33
Bit
1
(006733)
0
0
1
1
Bits 7, 6, 5, 4 - number of cycles required for cadence detection
807F34
International dial tone frequency
(006734)
range (high byte)
807F35
International dial tone frequency
range (low byte)
(006735)
807F36
Not used
(006736)
807F37
(006737)
Function
0
0
75%
1
50%
0
25%
1
12.5%
4-36
August 7th, 1995
Unit
Remarks
20 ms
Bits 2 and 3 must always
be kept at 0.
Hz (BCD)
See Note 2.
Do not change the factory
settings
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