Technical information

ADC Telecommunications, Inc.
282 C
HAPTER 11: FAULT MANAGEMENT
Alarm Throttling
Alarm throttling allows you to specify a maximum number of Traps that the
system can send to the table within a given time interval. The alarm
Path Alarm
Indication Signal
(PAIS)
Disabled by default, configures the system to report path
alarm indication signal errors. Line terminating equipment
(LTE) send packet alarm indication signals to alert
downstream path terminating equipment (PTE) of defects
on their incoming line signal.
Path Loss of
Pointer (PLOP)
Enabled by default, configures the interface to report path
loss of pointer errors. A PLOP error may result from an
invalid pointer or too many new data flag enabled
indications.
Path Remote
Defect Indication
(PRDI)
Disabled by default, configures the interface to report
path remote defect indication errors.
B2 Signal Degrade
(SD)
Disabled by default, configures the interface to report
when the B2 signal degrades enough to meet or cross a
specified Bit Error Rate (BER) threshold.
Specify this threshold in the B2 Signal Degrade field on the
left of the screen. The default BER threshold for B2 signal
failure is 6.
B2 Signal Fail (SF) Enabled by default, configures the interface to report a
failure when the B2 signal degrades enough to meet or
cross a specified Bit Error Rate (BER) threshold.
Specify this threshold in the B2 Signal Fail field on the left
of the screen. The default BER threshold for B2 signal
failure is 3.
Loss of Frame
(SLOF)
Enabled by default, configures the interface to report
section loss of frame errors. The interface detects SLOF
when an error on the incoming SONET signal persists for
at least 3 milliseconds.
Loss of Signal
(SLOS)
Enabled by default, configures the interface to report loss
of signal (SLOS) errors. The POS interface reports a SLOS
error under either of the following conditions:
When an all-zeros pattern on the incoming SONET signal
lasts at least 19(+-3) microseconds.
If the signal level drops below the a specified threshold.
Alarm Description