Synway Information Engineering Co., Ltd
SMG-D Series Analog Gateway User Manual (Version 2.0.0)
Page 22
3.5.2 FXO
The table below explains the particular configuration items for FXO.
Item
Description
Calling Party
Detection Time
The maximum waiting time for the detection of the calling party number from FXO
port. Range of value: 1~20, calculated by s, with the default value of
10
.
FXO Idle Valid
Voltage
Set the threshold voltage value of the FXO port in idle state.
FXO Talk Valid
Voltage
Set the threshold voltage value of the FXO port in talking state.
Silence Detection
Used to detect whether the line is silent or not according to the energy threshold
and time threshold of silence. FXO will hang up the call automatically if these
conditions are satisfied. The default setting is being disabled.
Energy Threshold of
Silence
The energy threshold to judge whether the line is silent or not. The signal with the
energy less than this set value will be determined to be silence. Range of value:
-86~5, calculated by s, with the default value of -34.
Note:
This item will be valid only when Silence Detection is enabled.
Time Threshold of
Silence
The time threshold to judge whether the line is silent or not, calculated by s, with the
default value of 60.
Note:
This item will be valid only when Silence Detection is enabled.
Rapid Release
Once this feature is enabled, the FXO port will release the source rapidly and go to
the idle state when a call from PSTN to soft-terminal via FXO port is rejected by the
IP soft-terminal.
FSK Standard
Standard for sending FSK formatted CallerID, which varies in different countries and
districts. The optional values are: ETSI (Europe), GR-30 (North America, China)
and NIT (Japan), with the default value of
GR-30
.
Reception Interval of
DTMF CallerID
The time interval between digits of the DTMF CallerID from FXO port, calculated by
ms, with the default value of 250.
Delay for Two Stages
Dialing
If the feature of two-stages dialing mode is enabled and an incoming call occurs, the
FXO port will have a delay set by this configuration item before going into the
two-stages dialing process,
Flash Time
Sets the time for generating a flash signal on the analog trunk. Range of value:
32~1000, calculated by ms, with the default value of 100.
Maximum Waiting
Time of Dial Tone
Set the maximum waiting time for dial tone detection. The value range is 1~30,
calculated by second, and the default value is 5.
FXO Pick-up Delay
after INVITE
Received at IP Side
Once this feature is enabled, the FXO port will be delayed to pick up the call after
the IP side receives the INVITE message.
Maximum Wait
Answer Time
The maximum time to wait the answer of the remote side for an outgoing call from
FXO port. This item is valid only when Polarity Reversal is enabled. It is calculated
by s, with the default value of 60.
Communication
without Network
Automatically routes a call to the proper port according to the configuration in case
of network failure or call timeout. The default value is
disabled
.
