348
Item Description
Advanced Settings
Dial Delay Time Specify the dial delay in seconds.
Lower Limit for Hookflash
Detection
Specify the time range for the duration of an on-hook condition that will be
detected as a hookflash. That is, if an on-hook condition that lasts for a period
that falls within the hookflash duration range (that is, the period is longer than
the lower limit and shorter than the upper limit) is considered a hookflash.
Upper Limit for Hookflash
Detection
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. Hewlett Packard Enterprise
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.
Electrical Impedance
Each country corresponds to an impedance value. Therefore, you can specify
an impedance value by specifying a country. By default, the electrical
impedance on the FXO or FXS voice subscriber line is the impedance value
corresponding to China.
Packet Loss
Compensation Mode
Specify either of the following packet loss compensation algorithms:
• Specific algorithm of the device.
• Universal frame erasure algorithm.
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 you enable this function, 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.
DTMF Detection
Sensitivity Level
Set the DTMF detection sensitivity level.
• Low—In this mode, the reliability is high, but DTMF tones might fail to be
detected.
• Medium—In this mode, the reliability is medium. If you select this option,
you can specify the Frequency Tolerance of Medium DTMF Detection
Sensitivity Level. The greater the value, the higher the probability of
false detection. Support for this option varies with installed cards.
• High—In this mode, the reliability is low and detection errors might occur.
Configuring an FXO voice subscriber line
Select Voice Management > Line Management from the navigation tree, and then click the
icon of the FXO line to be configured to access the FXO line configuration page, as show in Figure
73
4.
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