Zhone 2000 ユーザーガイド
C o n f i g u r a t i o n
121
Set Echo Cancellation
Default Setting for All
Ports
1
Type “1” on the Echo Cancellation Default Settings Configuration Menu
(Figure 4.86) to enable or disable echo cancellation for all ports.
2
Type “E” to enable echo cancellation for all ports, or “D” to disable it. The
IAD saves the mode you’ve selected and redisplays the Echo Cancellation
Default Settings Configuration menu.
3
Press Escape to continue with other voice path configuration.
Displaying Current
Echo Cancellation
Default Settings
To display the Current Echo Cancellation default settings, follow the steps
below.
below.
1
Type “2” on the Echo Cancellation Default Settings Configuration Menu
(Figure 4.86) to display the echo cancellation setting on each port. The IAD
lists each port and whether echo cancellation is enabled or disabled.
2
Press any key to return to the Echo Cancellation Default Settings
Configuration menu.
Configure Echo
Cancellation Default
Setting per Port
To configure the Echo Cancellation default setting per port, follow the steps
below.
below.
1
Type “3” on the Echo Cancellation Default Settings Configuration menu
(Figure 4.86) to enable or disable echo cancellation for a specific port. The
IAD prompts you to choose a line or port.
2
Type the port number to set. The IAD prompts you to enable or disable echo
cancellation for that port.
3
Type “E” to enable echo cancellation, or “D” to disable it. The IAD saves
the mode you’ve selected and redisplays the Echo Cancellation Default
Settings Configuration menu.
4
Press Escape to continue with other voice path configuration.
Set Loop Gain
When a country mode is selected, default loop gain values for that country are
assigned to the IAD. If the IAD feeds telephone circuits into a legacy PBX or
other equipment that defines transmit and receive levels to the network, the
loop gain value must match the value of the circuit it supplies. The levels are
determined and set by the PBX or terminating equipment manufacturer.
Adjusting the loop gain on the IAD can also compensate for telephone
volume’s being too loud or too soft.
assigned to the IAD. If the IAD feeds telephone circuits into a legacy PBX or
other equipment that defines transmit and receive levels to the network, the
loop gain value must match the value of the circuit it supplies. The levels are
determined and set by the PBX or terminating equipment manufacturer.
Adjusting the loop gain on the IAD can also compensate for telephone
volume’s being too loud or too soft.
NOTICE:
Loop gain values should be set only by your Network Administrator.
To set loop gain values, type “G” on the Voice Configuration menu (Figure
4.62) to display the Configure Loop Gain menu (Figure 4.87).