Nortel Networks Circuit Card 311 User Manual
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NT5D33 and NT5D34 Lineside E1 Interface cards
Set Date
Verify the current date. Do this by entering the
Set Date (S D)
command. The MMI then displays the date it has registered. Enter a
new date or hit
Enter
to leave it unchanged. The date is entered in the
"mm/dd/yy" format.
Set Alarm
The
Set Alarm (S A)
command sets the parameters by which an alarm
is activated and the duration of the alarm after it is activated. There are
three alarm levels as described below:
•
Alarm Level 0 (AL0) consists of activity with an error threshold below the
AL1 setting, which is a satisfactory condition and no alarm is activated.
•
Alarm Level 1 (AL1) consists of activity with an error threshold above
the AL1 setting, but below the AL2 setting that is deemed to be of minor
importance. In this situation, the external alarm hardware is activated
by closing the normally open contact, the RED ALARM LED on the
faceplate lights, and an alarm message is created in the alarm log and
the MMI terminal.
•
Alarm Level 2 (AL2) consists of activity with an error threshold above
the AL2 setting which is deemed to be of major importance. In this
situation, the following happens:
— the external alarm hardware is activated by closing the normally
open contact
— the RED ALARM LED on the faceplate lights
— an alarm message is created in the alarm log and the MMI terminal
— the LEI card enters line-conditioning mode
— a yellow alarm message is sent to the CPE/LTU
Line processing sends the CS 1000E, CS 1000M, and Meridian 1 either all
"on-hook" or all "off-hook" signals, depending on the dip switch setting of
the card. See
Table 118 "LEI card - E1 Switch 2 (S2) dip switch settings"
When the
Set Alarm
command is selected, the prompt appears for setting
the threshold level and duration for alarm levels 1 and 2.
The E1 link processes at a rate of approximately 2.0 mb/s. The threshold
value indicates the ratio of the total number of bits that must be detected
as being in error per second before the LEI activates an alarm. It can be
set between 3 and 9 and can be different for each alarm level. Any other
value entered causes the MMI to display a
"Parameter Invalid"
message. The digit entered as the threshold value is a number representing
a negative power of 10 as shown in
Table 125 "E1 bit error rate threshold
.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.