H3C Technologies H3C MSR 50 - Manual (Page 754)

369
Item Description
Input Gain on the Voice Interface
When the voice signals on the
line attenuate to a relatively
great extent, increase the voice
input gain value.
IMPORTANT:
Gain adjustment might lead to
call failures. H3C recommends
not adjusting the gain. If
necessary, do it with the
guidance of technical personnel.
Output Gain on the Voice Interface
When a relatively small voice
signal power is needed on the
output line, increase the voice
output gain value.
SLIC Chip Output Gain
Configure the output gain of the SLIC chip. The bottom layer tunes
the signal gain through the SLIC chip.
By default, the output gain of the SLIC chip is 0.8 dB.
Comfortable Noise Function
Generate some comfortable background noise to replace the
toneless intervals during a conversation. If no comfortable noise is
generated, the toneless intervals will make both parties in
conversation feel uncomfortable.
• Enable.
• Disable.
By default, the comfortable noise function is enabled.
Echo Cancellation Function • Enable.
• Disable.
After enabling this function, you can set the echo duration, that is,
the time that elapses from when a user speaks to when he hears the
echo.
Echo Duration
Nonlinear Function of Echo
Cancellation
• Enable.
• Disable.
Configuring an ISDN line
Select Voice Management > Line Management from the navigation tree, and then click the icon of
the ISDN line to be configured to access the ISDN line configuration page, as show in Figure 750 .
ISDN lines include BSV interfaces (for information about the BSV interface, see "Managing data links."
and ISDN lines generated by binding timeslots of digital E1 interfaces or T1 interfaces into PRI sets. For
the latter, before configuring the ISDN line, you need to perform the following configuration: select Voice
Management > Line Management from the navigation tree, and then click the
icon of the line to be
configured to access the corresponding parameters configuration page, and in the Working Mode area,
select the PRI Trunk Signaling option to create the ISDN line.