21 December, 2001
NCU PARAMETERS
3-65
Service
Tables
Address
Function
Unit
Remarks
680504
PSTN dial tone frequency upper limit
(high byte)
680505
PSTN dial tone frequency upper limit
(low byte)
Hz (BCD)
If both addresses contain
FF(H), tone detection is
disabled.
680506
PSTN dial tone frequency lower limit
(high byte)
680507
PSTN dial tone frequency lower limit
(low byte)
Hz (BCD)
If both addresses contain
FF(H), tone detection is
disabled.
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
If 680508 contains FF(H),
the machine pauses for
the pause time (address
68050D / 68050E).
Italy: See Note 2.
68050D
PSTN wait interval (LOW)
68050E
PSTN wait interval (HIGH)
20 ms
68050F
PSTN ring-back tone detection time
20 ms
Detection is disabled if
this contains FF.
680510
PSTN ring-back tone off detection
time
20 ms
680511
PSTN detection time for silent period
after ring-back tone detected (LOW)
20 ms
680512
PSTN detection time for silent period
after ring-back tone detected (HIGH)
20 ms
680513
PSTN busy tone frequency upper
limit (high byte)
680514
PSTN busy tone frequency upper
limit (low byte)
Hz (BCD)
If both addresses contain
FF(H), tone detection is
disabled.
680515
PSTN busy tone frequency lower
limit (high byte)
680516
PSTN busy tone frequency lower
limit (low byte)
Hz (BCD)
If both addresses contain
FF(H), tone detection is
disabled.
680517
PABX dial tone frequency upper limit
(high byte)
680518
PABX dial tone frequency upper limit
(low byte)
Hz (BCD)
If both addresses contain
FF(H), tone detection is
disabled.
680519
PABX dial tone frequency lower limit
(high byte)
68051A
PABX dial tone frequency lower limit
(low byte)
Hz (BCD)
If both addresses contain
FF(H), tone detection is
disabled.