Ricoh LD013, Service Manual

Page: 464 / 513

F
ax Un
it
B4
04
NCU PARAMETERS
SM 5-47 B404
Address Function Unit Remarks
68041B PABX dial tone detection time
68041C PABX dial tone reset time (LOW)
68041D PABX dial tone reset time (HIGH)
68041E PABX dial tone continuous tone time
68041F PABX dial tone permissible drop time
If 68041B contains FF,
the machine pauses for
the pause time (680420 /
680421).
680420 PABX wait interval (LOW)
680421 PABX wait interval (HIGH)
20 ms
680422 PABX ringback tone detection time 20 ms
680423 PABX ringback tone off detection
time 20 ms
If both addresses contain
FF(H), tone detection is
disabled.
680424 PABX detection time for silent
period after ringback tone detected
(LOW) 20 ms
680425 PABX detection time for silent
period after ringback tone detected
(HIGH) 20 ms
If both addresses contain
FF(H), tone detection is
disabled.
680426 PABX busy tone frequency upper
limit (high byte)
680427 PABX busy tone frequency upper
limit (low byte)
Hz (BCD) If both addresses contain
FF(H), tone detection is
disabled.
680428 PABX busy tone frequency lower
limit (high byte)
680429
PABX busy tone frequency lower
limit (low byte)
Hz (BCD) If both addresses contain
FF(H), tone detection is
disabled.
68042A Busy tone ON time: range 1
68042B Busy tone OFF time: range 1
68042C Busy tone ON time: range 2
68042D Busy tone OFF time: range 2
68042E Busy tone ON time: range 3
68042F Busy tone OFF time: range 3
680430 Busy tone ON time: range 4
680431 Busy tone OFF time: range 4
680432 Busy tone continuous tone detection
time
20 ms
680433 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