Verilink NCC 2020 (880-503284-001) Product Manual - Manual (Page 18)

Quick Set-Up
2-4 Verilink NCC 2020 User Manual
4. For this example, a Network Service Provider (NSP—the phone
company) is providing a timing signal with a Digital Access
and Cross-connect System (DACS). This is usually the case
where an inter-exchange carrier (long distance company) is
involved. When the carrier provides a timing signal, all other
devices on the T1 must use that signal to derive their transmit
clock. Use the “B” command for the DIU timing options and
select “5” for NET (recovered NETwork clock).
5. There are no more changes required to the default CSU
configuration to configure this example. Use the “X” command
to return to the NCC 2020 Main Menu.
Configuring the
DIU 2130
For this example, the NCC 2020 is used with a DIU 2130 module in
the right-hand side (slot 2) of a Dual-line shelf. The NCC 2020
connects directly to the T1 circuit and provides CSU functionality.
The DIU 2130 presents two synchronous serial interfaces for
connecting the Data Terminal Equipment (DTE) and provides DSU
functions.
Before any module may be configured, it must first be selected.
When you first logged in to the NCC 2020 the default was that the
NCC was selected. To configure the DIU 2130, first select it.
The S) shelf/slot S) shelf/slot S) shelf/slot S) shelf/slot command is used to navigate from one module to
another. Type “S” and press E NTER . The prompt for selecting
another module appears: Enter shelf,slot > Enter shelf,slot > Enter shelf,slot > Enter shelf,slot > For this example the
node has only one shelf (shelf #1) and the DIU 2130 is in slot two of
that shelf. Type “1,2” and press E
NTER .
The prompt line returns as: [1,2] DIU 2130 (UPDATE) > [1,2] DIU 2130 (UPDATE) > [1,2] DIU 2130 (UPDATE) > [1,2] DIU 2130 (UPDATE) > this indicates
that the DIU 2130 has been selected.
NOTE: Whenever the word UPDATE appears in the command line
prompt, it indicates that some information has changed since
the screen was last refreshed. To refresh the screen with
current information, simply press E NTER .
Configuration
Menu
Type “C” and press E NTER to select the DIU 2130 Configuration
Menu.
There is a brief delay as the NCC module attempts to communicate
with a CSU module in Shelf 0, Slot 0 since this is the default value
for CSU assignment in a new DIU 2130 module. An address of Shelf
0, Slot 0 is not a valid address. Modules are shipped this way in
order that they may be added to a shelf without interfering with
any existing applications. An error message appears:
No response from csu[ 0,0 ] No response from csu[ 0,0 ] No response from csu[ 0,0 ] No response from csu[ 0,0 ].