Verilink PRISM 3030 (34-00208.L) Product Manual - Manual (Page 50)

40 C HAPTER 3: O PERATION
Loss of Frame Secs
LOFS displays the number of seconds that the network interface is out of frame sync.
Unavailable Seconds
UAS displays the number of one-second intervals of unavailable service. Counting
begins when 10 consecutive severely errored seconds (CSES) occur and ends when
10 consecutive seconds pass with no SES. The initial 10 seconds are included in
this count.
Controlled Slip Seconds
CSS displays the number of one-second intervals where at least one controlled slip
occurred.
Bipolar Error Secs
BPES displays the number of one-second intervals where at least one bipolar code
violation occurred.
Daily performance data for the parameters listed above appears following the
15-minute interval listings. It is collected in 24-hour intervals for the preceding 30-day
period. The days (from Day#00 to Day#30) are viewed by pressing Select and using
the up and down arrow keys. Day#00 is the most recently stored day and Day#30 is
the oldest day. Pressing the Exit or Select keys returns the cursor to the left.
ESF Errors
Displays the total number of ESF error events since the counts were last reset. This
value is not recorded by interval. Counting stops when the value of 65535 is
reached.
Clear ESF Stats
When YES is selected, all user network performance registers are set to zero and
the parameter returns to NO. The telco register set (accessible by the service
provider) is not cleared by this action.
Network
Alarms
The network interface alarm status is reported as one of the states shown in the
following paragraphs. The front panel alarm indicator and the rear panel alarm relay
contacts are controlled solely by the user-selected Alarm Thresholds on page 26.
SIGNAL LOSS
Indicates that the T1 receive signal level has dropped below the level that can be
detected.
SYNC LOSS
Indicates that the unit is unable to synchronize on the incoming T1 framing
pattern.
AIS
Indicates that an unframed all ones pattern is being received.