Gestetner A193 Service Manual page 660

NCU PARAMETERS
Address
48041B PABX dial tone detection time
48041C PABX dial tone reset time (LOW)
48041D PABX dial tone reset time (HIGH)
48041E PABX dial tone continuous tone
time
48041F PABX dial tone permissible drop
time
480420 PABX wait interval (HIGH)
480421 PABX wait interval (LOW)
480422 PABX ringback tone detection time
480423 PABX ringback tone off detection
time
480424 PABX detection time for silent
period after ringback tone detected
(LOW)
480425 PABX detection time for silent
period after ringback tone detected
(HIGH)
480426 PABX busy tone frequency upper
limit (high byte)
480427 PABX busy tone frequency upper
limit (low byte)
480428 PABX busy tone frequency lower
limit (high byte)
480429 PABX busy tone frequency lower
limit (low byte)
48042A Busy tone ON time: range 1
48042B Busy tone OFF time: range 1
48042C Busy tone ON time: range 2
48042D Busy tone OFF time: range 2
48042E Busy tone ON time: range 3
48042F Busy tone OFF time: range 3
480430 Busy tone ON time: range 4
480431 Busy tone OFF time: range 4
480432 Busy tone continuous tone
detection time
480433 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).
Bits 7, 6, 5, 4 - number of cycles required for cadence detection
Bits 3 and 2 - Not used. Keep these bits at 0.
Bits 1 and 0 - Tolerance (±)
Bit
SM
Function
1 0
0 0 75%
0 1 50%
1 0 25%
1 1 12.5%
Unit
20 ms If 48041B contains FF, the
machine pauses for the
pause time (480420 /
480421).
20 ms Detection is disabled if this
contains FF.
20 ms
20 ms
20 ms
Hz (BCD) If both addresses contain
FF(F), tone detection is
disabled.
Hz (BCD) If both addresses contain
FF(F), tone detection is
disabled.
20 ms
4-56
Remarks
(A639)