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4. From the V.35/RS-530/X.21 Parameters menu, type 1. The Clock Rate sub-menu opens.
5. Select the required clock rate according the required data rate of n x 64kb/S. For example:
• Type 1 for 64 Kbps
• Type 8 for 512 Kbps (8 x 64)
• Type 32 for 2048 Kbps (32 x 64)
Model BL512 allows data rates up to 512 Kbps only.
To Configure Channels - Fractional E1
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 2 to select the Fractional E1 Parameters menu.
4. From the Fractional E1 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 31 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 31 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 E1
1. From the Fractional E1 Parameters menu, type 8 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 that should be used
with echo cancellation are not included, enter the numbers of the channels that should be
added. Enter numbers between 1 to 31 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.
Note: In systems with Channel Associated Signalling (CAS), echo cancellation should not be
set on channel 16, which is used for signalling.