Ricoh D072 Service Manual page 611

NCU Parameters
Address
PSTN dial tone continuous tone
68050B
time
PSTN dial tone permissible drop
68050C
time
68050D PSTN wait interval (LOW)
68050E PSTN wait interval (HIGH)
PSTN ring-back tone detection
68050F
time
PSTN ring-back tone off detection
680510
time
PSTN detection time for silent
680511 period after ring-back tone
detected (LOW)
PSTN detection time for silent
680512 period after ring-back tone
detected (HIGH)
PSTN busy tone frequency upper
680513
limit (high byte)
PSTN busy tone frequency upper
680514
limit (low byte)
PSTN busy tone frequency lower
680515
limit (high byte)
PSTN busy tone frequency lower
680516
limit (low byte)
D067/D068/D069/D072
Function
20 ms
20 ms
20 ms
20 ms
Hz (BCD)
Hz (BCD)
7-72
-
Detection is disabled if
this contains FF.
-
-
-
If both addresses
contain FF(H), tone
detection is disabled.
If both addresses
contain FF(H), tone
detection is disabled.
SM Appendix