43.10.9 General FXO Parameters
The general FXO and FXS parameters are described in the table below.
Table 43-56: General FXO and FXS Parameters
Parameter Description
FXS Parameters
Web: FXS Coefficient Type
EMS: Country Coefficients
[FXSCountryCoefficients]
Determines the FXS line characteristics (AC and DC)
according to USA or Europe (TBR21) standards.
 [66] Europe = TBR21
 [70] USA = (Default) United States
Note: For this parameter to take effect, a device reset is
required.
FXO Parameters
Web: FXO Coefficient Type
EMS: Country Coefficients
[CountryCoefficients]
Determines the FXO line characteristics (AC and DC)
according to USA or TBR21 standard.
 [66] Europe = TBR21
 [70] USA = (Default) United States
Note: For this parameter to take effect, a device reset is
required.
[FXODCTermination]
Defines the FXO line DC termination (i.e., resistance).
 [0] = (Default) DC termination is set to 50 Ohms.
 [1] = DC termination set to 800 Ohms. The termination
changes from 50 to 800 Ohms only when moving from
onhook to offhook.
Note: For this parameter to take effect, a device reset is
required.
[EnableFXOCurrentLimit]
Enables limiting the FXO loop current to a maximum of 60 mA
(according to the TBR21 standard).
 [0] = (Default) FXO line current limit is disabled.
 [1] = FXO loop current is limited to a maximum of 60 mA.
Note: For this parameter to take effect, a device reset is
required.
[FXONumberOfRings]
Defines the number of rings before the device's FXO interface
answers a call by seizing the line.
The valid range is 0 to 10. The default is 0.
When set to 0, the FXO seizes the line after one ring. When
set to 1, the FXO seizes the line after two rings.
Notes:
 This parameter is applicable only if automatic dialing is not
used.
 If caller ID is enabled and if the number of rings defined by
the parameter RingsBeforeCallerID is greater than the
number of rings defined by this parameter, the greater
value is used.
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