Address
Function
Unit
Remarks
807F24
PABX detection time for silent
period after ringback tone
detected (LOW)
20 ms
807F25
PABX detection time for silent
period after ringback tone
detected (HIGH)
20 ms
807F26
PABX busy tone frequency range
(high byte)
Hz (BCD)
If this is FF, detection is
disabled. See Note 2.
807F27
PABX busy tone frequency range
(low byte)
See Note 2.
807F28
Not used
Do not change the factory
settings.
807F29
807F2A
Busy tone ON time: range 1
20 ms
807F2B
Busy tone OFF time: range 1
807F2C
Busy tone ON time: range 2
807F2D
Busy tone OFF time: range 2
807F2E
Busy tone ON time: range 3
807F2F
Busy tone OFF time: range 3
807F30
Busy tone ON time: range 4
807F31
Busy tone OFF time: range 4
807F32
Busy tone continuous tone
detection time
807F33
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
0 0 75%
Bits 2 and 3 must always
0 1 50%
be kept at 0.
1 0 25%
1 1 12.5%
Bits 7, 6, 5, 4 - number of cycles required for cadence detection
807F34
International dial tone frequency
range (high byte)
Hz (BCD)
See Note 2.
807F35
International dial tone frequency
range (low byte)
807F36
Not used
Do not change the factory
settings
807F37
SERVICE TABLES AND PROCEDURES
May 22nd, 1995
NCU PARAMETERS
4-46