ACCULINK 3350 E1 NTU
4-8
June 1996
3350-A2-GB20-10
Table 4-4
(1 of 2)
Performance Registers
Register
Interval Description
Totals Description
Event
(Not valid for
Lp
n registers.)
Error events counter. An error event is a frame
with either a Cyclic Redundancy Check (CRC)
error or an Out Of Frame (OOF) event. The
maximum count is 65,535. This register is only
reset as a result of a Clear Performance
Register command. This register is valid for the
current interval only.
N/A
CurTimer
Current interval timer. This register records the
number of seconds in the current 15-minute
interval. The maximum is 900 seconds. This
register is valid for the current interval only.
N/A
VldIntvl
N/A
Valid interval total. Records the number of valid
15-minute intervals in the previous 24 hours. This
register is not valid for the current interval.
ES
The number of errored seconds for the current
interval. An errored second is any second with
one or more of the following: errored frame
alignment, CRC error, Loss of Signal (LOS),
Alarm Indication Signal (AIS), or Loss of Frame
(LOF). The maximum is 900 seconds.
The total number of errored seconds for the previous
24 hours.
UAS
The number of unavailable seconds for the
current interval. An unavailable second is any
one second interval when service is
unavailable. (Detection occurs with 10
consecutive unavailable seconds.) The
maximum is 900 seconds.
The total number of unavailable seconds for the
previous 24 hours.
SES
The number of severely errored seconds for the
current interval. For E1 or DTE registers, a
severely errored second is any second with 805
or more CRC errors, 16 or more errored frame
alignment signal events, or one or more LOS,
AIS, or OOF event. For Lp
n registers, a
severely errored second is any second with 50
or more CRC6 errors. The maximum is 900
seconds.
The total number of severely errored seconds for the
previous 24 hours.
BES
(Not valid for
Lp
n registers.)
The number of bursty errored seconds for the
current interval. A bursty errored second is any
second with more than one, but less than 805,
CRC errors when in CRC4 mode, or more than
one, but less than 16, errored frame alignment
signals when in non-CRC4 mode. The
maximum is 900 seconds.
The total number of bursty errored seconds for the
previous 24 hours.
