Verilink 2048 (34-00179) Product Manual - Manual (Page 30)

4-10 Terminal Operation 2048 PMU/NTU
NOTE: Repeat the above steps for the opposite circuit
end and ensure that all settings match at each end.
Go to Alarm Thresholds: Selecting this field will bring up
the ‘Alarm Configuration’ screen described in Section 4.6.2.
4.6.2 Alarm Configuration
The ‘Alarm Configuration’ screen (Screen 4-7) allows the
user to review and set alarm related thresholds (minimum
acceptable performance levels) for the unit. Alarm condi-
tions may be reported by alarm relay contacts and/or by an
audible alarm. If an error condition exceeds the preset alarm
thresholds, the red ‘Status’ LED on top of the front panel,
the ‘LOC ALM’ LED, and the alarm relay are activated.
If the Alarm Reset Timer period elapses with no further
errors detected, the alarm relay and both LEDs will clear. If
the ACO (Alarm Cut Off) switch is activated while an alarm
condition exists, the Status LED and alarm relay will clear.
The ‘LOC ALM’ LED remains lit until the Alarm Reset
Timer period elapses.
To modify the default parameters, highlight the desired sta-
tistic, type in the new value (any number from 0 to 900) and
press <return>. If this value is later surpassed, an alarm indi-
cation will appear. A field set to
(0) causes the PMU not to
alarm on that statistic. Refer to the ‘Installation’ chapter for
more information on manually set alarm configurations.
Errored Seconds: A one second period in which at least
one OOF, SLIP, CRC4, or FAS (non-CRC4 mode) error
event occurred.
Severely Errored Seconds: A one second period in which
1 OOF or SLIP, 805 or more CRC4 errors, or 16 FAS errors
occurred.
Loss of Signal Seconds: A one second period in which the
E1 received signal is interrupted.
Unavailable Seconds: A one second period in which con-
secutive severely errored seconds cause an unavailable state.
DTE LOS/OOF Seconds: A one second period in which
the E1 received signal (on the PMU’s DTE side) is inter-
rupted, or the amplitude drops below a certain level, or
frame sync is lost.
Remote Alarm Seconds: Generated by the terminal equip-
ment when an improper signal is received from the facility
(or upon receipt of unframed all ones).
AIS Seconds: A one second period in which all ones are
received.
Out of Frame Seconds: A one second period in which a
frame sync loss occurred.
BPV Seconds: A one second period in which at least one
bipolar violation occurred.
Alarm Reset Timer: Determines the number of seconds
after alarm conditions clear before indications are removed.
Go to Line Settings: Pressing <return> here brings up the
‘Line Configuration’ screen.
4.7 Utilities Screen
The ‘Utilities’ screen (Screen 4-8) handles the functions
described in the following paragraphs.
2048 PMU x.xx/x.xx 2048 PMU Date MM/DD/YY
2048 PMU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS
----------------------------- ALARM CONFIGURATION ------------------------------
Element: [NEAR]
Errored Seconds (ES): ( 15) Remote Alarm Seconds (RAS): ( 0)
Severely Errored Seconds (SES): ( 5) AIS Seconds (AISS): ( 0)
Loss of Signal Seconds (LOSS): ( 5) Out of Frame Seconds (OOFS): ( 5)
Unavailable Seconds (UAS): ( 0) BPV Seconds (BPVS): ( 0)
DTE LOS/OOF Seconds (LOSS): ( 5) Alarm Reset Timer (seconds): ( 30)
(GO TO LINE SETTINGS)
Screen 4-7 Alarm Configuration