Ricoh Type M12 Field Service Manual page 164

4. Service Tables
Address
680501 Line current detection time
680502 Line current wait time
680503 Line current drop detect time
PSTN dial tone frequency upper limit
680504
(high byte)
PSTN dial tone frequency upper limit
680505
(low byte)
PSTN dial tone frequency lower limit
680506
(high byte)
PSTN dial tone frequency lower limit
680507
(low byte)
680508 PSTN dial tone detection time
680509 PSTN dial tone reset time (LOW)
68050A PSTN dial tone reset time (HIGH)
68050B PSTN dial tone continuous tone time
68050C PSTN dial tone permissible drop time
68050D PSTN wait interval (LOW)
68050E PSTN wait interval (HIGH)
68050F PSTN ring-back tone detection time
680510 PSTN ring-back tone off detection time
PSTN detection time for silent period
680511
after ring-back tone detected (LOW)
PSTN detection time for silent period
680512
after ring-back tone detected (HIGH)
162
Function Unit
Line current detection is
disabled.
20 ms
Line current is not detected if
680501 contains FF.
If both addresses contain
Hz (BCD) FF(H), tone detection is
disabled.
If both addresses contain
Hz (BCD) FF(H), tone detection is
disabled.
If 680508 contains FF(H),
the machine pauses for the
pause time (address
68050D / 68050E).
20 ms
Italy: See Note 2.
-
Detection is disabled if this
20 ms
contains FF.
20 ms -
20 ms -
20 ms -
Remarks