
Synway Information Engineering Co., Ltd
3.4.1 FXS/FXO
Figure 3-10 FXS/FXO Configuration Interface
See Figure 3-10 for the FXS/FXO configuration interface. The table below explains the items
shown in the above figure.
Item
Description
Tone Standard
Standard for tone signals such as dialing tone and howler tone, which varies in
different countries and districts. You can configure this parameter according to the
actual location of the gateway. By default this item is set to
China
. (Currently,
China
is the only option available.)
Frequency
Parameters
The value of this configuration item varies with
Tone Standard
. Also it can be
modified. The table below explains the detailed meaning of the 4 parameters from
left to right.
Parameter Description
1
The 1
st
center frequency. Range of value: 300~3400, calculated
by Hz, with the default value of 450.
2
Allowable error of The 1
st
center frequency. Range of value:
10~50, calculated by ‰, with the default value of 50.
3
The 2
nd
center frequency. Range of value: 0 or 300~3400,
calculated by Hz, with the default value of 0.
Allowable error of The 2
nd
center frequency. Range of value: 0 or
10~50, calculated by ‰, with the default value of 0.
4
Note: If it is not necessary to use the 2
nd
center frequency, you should set both the
third and the forth parameters to 0 (default value); if only one of these two
parameters is set to 0 and the other is set to other value, it will prompt error.
SMG Series Analog Gateway User Manual (Version 1.0)
Page 17