Ricoh M0A0 Service Manual page 718

4.Service Tables
Address
680505 PSTN dial tone frequency upper limit
(low byte)
680506 PSTN dial tone frequency lower limit
(high byte)
680507 PSTN dial tone frequency lower limit
(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
680511 PSTN detection time for silent period
after ring-back tone detected (LOW)
680512 PSTN detection time for silent period
after ring-back tone detected (HIGH)
680513 PSTN busy tone frequency upper limit
(high byte)
680514 PSTN busy tone frequency upper limit
(low byte)
680515 PSTN busy tone frequency lower limit
(high byte)
680516 PSTN busy tone frequency lower limit
(low byte)
680517 PABX dial tone frequency upper limit
(high byte)
680518 PABX dial tone frequency upper limit
(low byte)
680519 PABX dial tone frequency lower limit
(high byte)
68051A PABX dial tone frequency lower limit
(low byte)
68051B PABX dial tone detection time
68051C PABX dial tone reset time (LOW)
92
Function Unit
Hz (BCD) If both addresses contain FF (H), tone
detection is disabled.
20 ms If 680508 contains FF (H), the machine
pauses for the pause time (address 68050D
/ 68050E).
Italy: See Note 2.
-
20 ms Detection is disabled if this contains FF.
20 ms -
20 ms -
20 ms -
Hz (BCD) If both addresses contain FF (H), tone
detection is disabled.
Hz (BCD) If both addresses contain FF (H), tone
detection is disabled.
Hz (BCD) If both addresses contain FF (H), tone
detection is disabled.
Hz (BCD) If both addresses contain FF (H), tone
detection is disabled.
20 ms If 68051B contains FF, the machine pauses
for the pause time (680520 / 680521).
Remarks