Nortel Networks 1000 - Manual (Page 293)

Man-Machine E1 maintenance interface software 293
Table 112
Set alarm options (cont’d.)
Option Description
AL2 Threshold Sets the allowable bit errors per second (from 3 to 9) before
alarm level 2 is activated. Factory default is 10
-5 .
AL2 Duration Sets the duration in seconds (from 1 to 3,600 seconds) that
alarm level 2 is activated. Factory default is 10 seconds.
Frame Slip
Threshold Sets the allowable frame slips per time period (from 1 to 255)
before alarm level 2 is activated. Factory default is 5.
Frame Slip
Duration Sets the duration in hours (from 1 to 24) that the frame slips
are counted. After this time period, the counter is reset to 0.
Factory default is 2 hours.
Note: If the duration period set is too long, the LEI card is slow to
return to service automatically even when the carrier is no longer
experiencing errors. The
CLEAR ALARM (C A) command has to be
entered manually to restore service promptly. To avoid this, an alarm’s
duration period is normally set to 10 seconds.
Set Clearing
The SET CLEARING (S C) command allows self-clearing of alarms by
responding to the question: Enable Self Clearing? (YES or NO). If YES
is chosen (the factory default setting), the system automatically clears
(resets) alarms after the alarm condition is no longer detected. Choosing
the NO option causes the system to continue the alarm condition until the
Clear Alarm (C A) command is entered. Line processing and yellow
alarm indication to the CPE terminates as soon as the alarm condition
clears, even if self-clearing is disabled.
Set Simple
The SET SIMPLE command controls call tear-down signaling when the
far-end disconnects from a call.
When the far-end terminates a call, Release 1 of LEI’s AB vintage sends a
disconnect message to the terminal equipment and waits for the terminal
equipment to go idle before going idle itself. A NO response to the
S S
command configures Release 2 (and later) boards to operate in this way.
See
Figure 65 "Set Simple (S S) no screen" (page 294) .
Release 2 of AB vintage LEIs gives the administrator the option of using
the signaling described above, or configuring the LEI to take its channel
idle immediately after sending the call-disconnect message. A YES
response to the
S S command, the default configuration for Release 2 (and
later) boards, configures the LEI to operate in this way. See Figure 66 "Set
Simple (S S) yes screen" (page 294) .
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.