Nortel-networks Circuit Card Manual de usuario Pagina 284

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Page 284 of 906 NT5D33 and NT5D34 Lineside E1 Interface cards
553-3001-211 Standard 3.00 August 2005
Man-Machine E1 maintenance interface software
Description
The Man-Machine Interface (MMI) provides E1-link diagnostics and
historical information for the LEI system. See “Installation and
Configuration” on page 263 for instructions on how to install the cabling and
configure the terminal for the MMI. The following sections will describe the
options available through the LEI’s MMI terminal and will explain how to
set-up, configure, and use the MMI.
The MMI provides the following maintenance features:
configurable alarm parameters
E1-link problem indicator
current and historical E1-link performance reports
E1 verification and fault isolation testing
configuration of A\B bits (North American Standard, Australian P2, or
customized settings are available)
Alarms
The MMI may be used to activate alarms for the following E1-link
conditions:
excessive bit-error rate,
frame-slip errors,
out-of-frame,
loss-of-signal, and
blue alarm.
Pre-set thresholds and error durations trip LEI alarm notifications. For
descriptions of each of these E1-link alarm conditions, see “Performance
counters and reporting” on page 304. For instructions on how to set alarm
parameters, see “Set Alarm” on page 290. For information on accessing
alarm reporting, see “Display Alarms” on page 302, “Display Status” on
page 303 and “Display Performance” on page 305.
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