Ricoh D117 Service Manual page 1181

NCU Parameters
Address
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)
PABX dial tone frequency upper
680517
limit (high byte)
PABX dial tone frequency upper
680518
limit (low byte)
PABX dial tone frequency lower
680519
limit (high byte)
D649
Function
124
Unit
-
Detection is disabled if
20 ms
this contains FF.
20 ms -
20 ms -
20 ms -
If both addresses
Hz (BCD) contain FF(H), tone
detection is disabled.
If both addresses
Hz (BCD) contain FF(H), tone
detection is disabled.
If both addresses
Hz (BCD) contain FF(H), tone
detection is disabled.
If both addresses
Hz (BCD)
contain FF(H), tone
Remarks
SM