Impedance/CP Tone
The Impedance/CP Tone setting determines the dial
tone, busy tone, and ringback tone to the originating
party. Select the appropriate impedance/call-progress
tone for the local region.
Default Codec
Select g711ulaw or g711alaw for connecting to other
devices.
Input/Output Gain
Voice amplification or attenuation in dB scale to adjust
input/output volume of a PSTN line.
Caller ID Detection
Select to detect the Caller ID calling from PSTN lines.
When DID to an extension number, it is suggest to
enable this function, or the forwarding settings at
phone side may not work properly.
Answering by Battery Reversal
Detection
If selected, billable time will count from when the call is
answered.
Please enable this function when Central Office
(CO) site provides battery reversal.
Minimum Disconnection Tone
Minimum volume level of the disconnection tone. If a
PSTN trunk is found to have disconnection problem
and low-voice , choose a lower dB.
Call Time Restriction
Enter a number (1-1440) in minutes to limit the call
period. If a call lasts longer than the time, IP PBX will
force to terminate the call. Enter 0 or leave it blank to
disable the function.
1
st
/ 2
nd
Frequency of On-cycle Tone
Enter a number in Hz for call disconnection on-cycle
tone.
1
st
/ 2
nd
Frequency of Off-cycle Tone
Enter a number in Hz for call disconnection off-cycle
tone.
Min/Max Duration of On-cycle Tone
Enter a time in ms for minimum or maximum duration
of on-cycle tone.
Min/Max Duration of Off-cycle Tone
Enter a time in ms for minimum or maximum duration
of off-cycle tone.
Forced Disconnection of this
Duration (ms) of Silence Detected
Enter a time in ms for disconnecting the call when there
is no sound for the specific period of time.
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