6
CONVERTER MODE SETTING SCREEN
6-21
7. [V/RoIP] Menu
M
PSTN
Configure the details to connect to the PSTN (Public Switched Telephone Network).
q
RX Volume ………………
Select the telephone receive audio volume level.
(Default: 0)
w
TX Volume ………………
Select the telephone transmit audio volume level.
(Default: 0)
e
Echo Canceller ……………
Select an echo cancelling option.
(Default: Enable (Booting Optimization))
When “Enable (Manual optimization)” or “Enable (Booting optimization)” is
selected, the echo heard by the party is reduced.
r
Optimization Status ………
Displays the optimization status; “Not optimised,” “During optimization” or
“Optimization failure.”
t
Optimization ………………
If you select other than “Disable” in the [Optimization Status] item, click
<Start> to proceed the Echo Canceller optimization.
y
Echo Suppression ………
Select “Enable” to reduce the echo.
(Default: Enable)
This function automatically adjusts the receive audio volume according to the
transmit audio level, to reduce the echo.
u
Echo Suppression Level …
Select the echo suppress level.
(Default: –30)
When received audio is discontinuous, decrease this value.
Note: Too low value increases the echo.
i
CNG Signal ………………
Select “Enable” to use CNG (Comfort Noise Generator) function.
This function intentionally applies the white noise to the received audio to
reduces the uncomfortableness during audio absence.
(Default: Enable)
o
CNG Signal Level ………
If you use the CNG function, select the noise level to apply.
(Default: –52)
!0
Contract Line Number ……
Enter the contract line number.
[V/RoIP]–[LINE1/2]
