4.Service Tables
93
PABX dial tone reset time (HIGH)
PABX dial tone continuous tone time
PABX dial tone permissible drop time
PABX wait interval (HIGH)
PABX ringback tone detection time
If both addresses contain FF (H), tone
detection is disabled.
PABX ringback tone off detection time
PABX detection time for silent period
after ringback tone detected (LOW)
If both addresses contain FF (H), tone
detection is disabled.
PABX detection time for silent period
after ringback tone detected (HIGH)
PABX busy tone frequency upper limit
(high byte)
If both addresses contain FF (H), tone
detection is disabled.
PABX busy tone frequency upper limit
(low byte)
PABX busy tone frequency lower limit
(high byte)
If both addresses contain FF (H), tone
detection is disabled.
PABX busy tone frequency lower limit
(low byte)
Busy tone ON time: range 1
Busy tone OFF time: range 1
Busy tone ON time: range 2
Busy tone OFF time: range 2
Busy tone ON time: range 3
Busy tone OFF time: range 3
Busy tone ON time: range 4
Busy tone OFF time: range 4
Busy tone continuous tone detection time
Busy tone signal state time tolerance for all ranges, and number of cycles required for detection (a
setting of 4 cycles means that ON-OFF-ON or OFF-ON-OFF must be detected twice).
Tolerance (±)
Bit 1: 0, Bit 0: 0 = 75% Bits 2 and 3 must always be kept at 0.
Bit 1: 0, Bit 0: 0 = 50% Bits 2 and 3 must always be kept at 0.
Bit 1: 0, Bit 0: 0 = 25%
Bit 1: 0, Bit 0: 0 = 12.5%
Bits 7, 6, 5, 4 - number of cycles required for cadence detection
International dial tone frequency upper
If both addresses contain FF (H), tone
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