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64179008APL1-5A 19
The LIU Configuration Menu allows the user to view
general information about the unit including unit
name, part number, CLEI code, and revision numbers.
The LIU Configuration menu is a read-only menu that
is only updated when new software revisions are
installed.
The LIU Provisioning Menu allows the user to view
and make changes to options concerning each HDSL2
port. The LIU Provisioning Menu provides an NIU
Loopback sub-menu, a Loopback Timeout sub-menu,
and a Framing Mode sub-menu. The NIU Loopback
sub-menu allows the user to enable or disable each
loop’s response to loopback codes. The first screen
that is shown is for Loop 1. Other Loops may be
accessed by using N for next and P for the previous
Loop. When NIU Loopback is Enabled, the unit will
accept and act upon loopback codes sent from the
network. When NIU Loopback is Disabled, loopback
codes are ignored. The Loopback Time Out submenu
allows the user to set a Loopback Time Out for each
port. The Loopback Time Out may be set to None, 20
Minutes, 60 Minutes, or 120 Minutes and dictates the
maximum time that a circuit may remain in the
loopback condition. The Framing Mode submenu
allows the user to choose between SuperFrame (SF)
and Extended SuperFrame (ESF) framing for each
HDSL2 Port.
The LIU Span Status Menu provides the user to with
statistics vital to successful operation of the Total
Access 1000 DAT. This menu provides signal quality
statistics in terms of Margin (current/minimum/
maximum) for each HDSL2 loop. Attenuation
(current/maximum), Errored Seconds (ES), Severely
Errored Seconds (SES), and Unavailable Seconds
(UAS) for the last 15-minute interval are also revealed
on the LIU Span Status screen. An example of the
LIU Span Status screen is shown in Figure 18.
The LIU Test Menu allows the user to invoke a
Network Loopback for each individual port or a
Backplane Loopback, which puts a Line Loopback on
all ports at once.
Figure 18. LIU Span Status Screen
Total Access 1000 (ATM)
HDSL2 Quad LIU Span Status
H2TU-R
Loop 1 Loop 2 Loop 3 Loop 4
-------- -------- ------- ---------
MARGIN(CUR/MIN/MAX): 16/00/17 17/00/17 17/00/17 17/00/17
ATTEN(CUR/MAX): 00/01 00/01 01/02 00/01
ES: 000 000 000 000
SES: 000 000 000 000
UAS: 000 000 000 000
1. Zero Registers
2. Restart Min/Max
Selection :