Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.1.0)
Page 38
Figure 3-32 Modify Tone Parameter
The table below explains the items shown in the above figure.
Item
Description
Index
The unique index of each group of tone detectors.
Tone
There are three options:
Dial Tone
,
Busy Tone
and
Ringback Tone
.
Type
There are two options:
Continuous Tone
and
Periodic Tone
.
The 1
st
Mid-frequency
The 1
st
center frequency. Range of value: 300~3400, calculated by Hz. The default
value is 450.
The 2
nd
Mid-frequency
The 2
nd
center frequency. Range of value: 0 or 300~3400, calculated by Hz. The
default value is 0.
Duration at ON State
The duration of tones at on state. The default setting: Dial Tone is 1500ms, Busy
Tone is 350ms, Ringback Tone is 1000ms.
Duration at OFF
State
The duration of tones at off state. The default setting: Dial Tone is 0ms, Busy Tone is
350ms, Ringback Tone is 4000ms.
Period Count
Sets the count of periods as the condition to determine a periodic tone. The default
setting: Dial Tone is 0, Busy Tone is 2, Ringback Tone is 1.
Energy
Sets the energy threshold for the tone detector to detect the on-line tone. To
increase the accuracy, you can adjust the value according to the tone volume on the
line. Range of value: -18~11, calculated by dB. The default value is 0.