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The conditions which cause the alarm to operate may be selected from the System
Alarms menu page (shown below). Each of the possible Alarm conditions may be set to any
of the following actions:
a)
NO ACTION The events will not cause the relay contacts to operate, or the
event to be logged.
b)
LOG ONLY The events will not cause the relay contacts to operate, but the
event will be logged.
c)
MINOR
LED to illuminate, and the MINOR alarm relay contacts to operate.
d)
MAJOR
LED to illuminate, and the MAJOR alarm relay contacts to operate.
=============================== 11:47 06/01/97 ==================================
Main Link (EUR)
Mode
Framing
Idle Bandwidth
Clock Reference
Configuration
Link Carrier Loss :
Timeslot Mismatch : MAJOR
D&I Carrier Loss :
D&I Remote Alarm : MINOR
Nx64 Control Off :
Nx64 Clock Fail :
Remote Alarm
Link BER High
=================================================================================
Use <SPACEBAR>/<+>/<-> to select
Note that the screen display also indicates the highest active alarm status (None, Minor or
MAJOR), to the right of the 'Alarm' page prompt on the top right of the screen.
The reasons for which an alarm may be reported as 'FAULT' are identified below:
Link Carrier Loss
The local Multiplexer cannot identify a valid synchronisation sequence (FAS, CRC4
etc) from the remote multiplexer.
The event will be logged, and will cause the MINOR alarm
The event will be logged, and will cause the MAJOR alarm
2 MEGABIT E1 MULTIPLEXER
:
SYNCHRONISED
:
NORMAL
:
CRC4
:
0K
:
INTERNAL
: >LOCAL
Event
Action
Status
MAJOR
MINOR
FAULT
NO ACTION
LOG ONLY
:
MAJOR
:
MINOR
Cursor Keys to move, CTRL-U to save, ESC to abandon
V1.01
Nx64 Channels : 4
D&I Channels
: 1
* System Alarms : Minor
Statistics
: Main Link
Events
: Log
OK
OK
OK
OK
OK
OK
OK
BER Threshold : 1E-8
TECHNICAL: 0118 931 2233
Echo 2 Mbps Multiplexer
19
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