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4. From the Add/Remove Echo Cancellation on voice channels menu, type 2 to select the
Clear (Remove) Channels menu.
5. View the current list of channel with echo cancellation. If channels in which echo
cancellation should not be used are included, enter the numbers of the channels that should be
removed from the list. Enter numbers between 1 to 31 separated by a comma. Use two dots to
indicate a range. e.g. 2,5..7 means remove echo cancellation from channels 2, 5, 6 and 7.
6. In Fractional T1 applications, both units should be configured to use the same channels. In
applications with voice channels, both units should be configured to use echo cancellation in
the same channels.
To Configure Channels- Fractional T1
1. From the Main menu, select 1 to access the Parameters menu.
2. From the Parameters menu, type 1 to select the LIU Parameters menu.
3. From the LIU Parameters menu, type 4 to select the Fractional T1 Parameters menu.
4. From the Fractional T1 Parameters menu, type 1 to select the Add/Remove channels menu.
5. From the Add/Remove Channels menu, type 1 to select the Add Channels menu.
6. View the current active channels. If channels that should be used are not included, enter
the numbers of the channels that should be added. Enter numbers between 1 to 24 separated
by a comma. Use two dots to indicate a range. e.g. 1,8..11,14 means add channels 1, 8, 9, 10,
11 and 14.
7. From the Add/Remove Channels menu, type 2 to select the Remove Channels menu.
8. View the current active channels. If channels that should not be used are included, enter
the numbers of the channels that should be removed from the list. Enter numbers between 1
to 24 separated by a comma. Use two dots to indicate a range. e.g. 2,5..7 means remove
channels 2, 5, 6 and 7.
To Configure Channels with Echo Cancellation- Fractional T1
1. From the Fractional E1 Parameters menu, type 0 to select the Add/Remove Echo
Cancellation on voice channels menu.
2. From the Add/Remove Echo Cancellation on voice channels menu, type 1 to select the Set
(Add) Channels menu.
3. View the current list of channels with echo cancellation. If channels in which echo
cancellation should be used are not included, enter the numbers of the channels that should be
added. Enter numbers between 1 to 24 separated by a comma. Use two dots to indicate a
range. e.g. 1,8..11,14 means set echo cancellation to channels 1, 8, 9, 10, 11 and 14.