Nortel Networks 553-3001-211 manual Man-Machine E1 maintenance interface software, Description

Page 272 of 894 NT5D33 and NT5D34 Lineside E1 Interface cards

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 251 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 292. For instructions on how to set alarm parameters, see “Set Alarm” on page 278. For information on accessing alarm reporting, see “Display Alarms” on page 290, “Display Status” on page 291 and “Display Performance” on page 293.

553-3001-211 Standard 2.00 September 2004