Obihai OBi110 Administration Manual page 140

SilenceTimeThreshold
DetectDisconnectTone
DisconnectTonePattern
Port Settings
ACImpedance
OnHookSpeed
TipRingVoltageAdjust
MinOperationalLoopCurrent
CurrentLimitingEnable
ChannelTxGain
ChannelRxGain
LineInUseVoltageThreshold
LineInUseCurrentThreshold
CallerIDDetectMethod
DTMFPlaybackLevel
Ring Detection
RingFrequencyMin
RingFrequencyMax
RingThreshold
RingValidationTime
RingIndicationDelayTime
RingTimeout
RingerImpedance
This parameter is used to select a sensitivity level for OBi silence
detection. Available choices are:
Low (harder to detect silence)
Medium (suggested)
High (easier to detect silence)
For OBi to declare that the PSTN line has gone silent, the energy level of
the signal received from the far end has to fall below the threshold
selected in SilenceSignalThreshold for at least a certain continuous period
of time. This parameter specifies the minimum duration of this silent
period in seconds.
Enable the detection of disconnect tone (as specified in
DisconnectTonePattern parameter) as a trigger to end the current call
A tone pattern that describes the tone from the phone company when
the call is terminated by the peer or by the phone company herself. For
example, a fast busy tone or busy tone can be used as the disconnect
tone.
Off-hook AC termination
Time for line-side device to go on-hook
Voltage on DCT pin of line-side device, which affects TIP/RING voltage on
the line. Low-voltage countries should use lower TIP/RING voltage
Minimum loop current the LINE port hardware can operate at
Limit loop current to 60 mA per the TBR21 standard
Gain in dB (-15 to 15) to apply to the signal transmit from the OBi to the
PSTN company
Gain in dB (-15 to 15) to apply to the signal received by the OBi from the
PSTN company
Voltage below which to detect a parallel device off-hook when LINE port
hardware is in the On-Hook state
Current (mA) above which to detect a parallel device off-hook when LINE
port hardware is in the Off-Hook state
The Caller ID delivery standard for which the OBi device should assume
when decoding Caller ID signal received from the PSTN company.
Available choices are:
FSK(Bell202)
FSK(V.23)
DTMF(Finland, Sweden)
DTMF(Denmark)
The energy level of DTMF signal transmitted on PSTN line port in dBm (-
90 to 3)
Minimum ring frequency to detect
Maximum ring frequency to detect
Voltages (Vrms) below the lower limit will not trigger ring detection;
voltages above the upper limit will
Time in ms to validate the ring signal
Time in ms between ring signal validated and valid ring signal indicated
Time (ms) elapsed since last ring threshold crossing to declare ring is over
Synthesized ringer impedance to meet specification in countries, such as
Poland, South Africa, and Slovenia
Copyright 2010-2012 Obihai Technology, Inc.
60
Yes
480-30,620-
30;10;(.25+.25)
600
0.5 ms
3.5 V
10 mA
No
0
5
25
12
FSK(Bell 202)
-5
15
50
40.50-49.50
640
512
1408
High
140