SONET Tab
370
B2
Line Overhead BIP-8 Code Violation
. Indicates that parity
errors were detected at the Line layer of the incoming
SONET signal. This is calculated over the Line OH, Path OH,
and payload of each STS-1. This is an error LED
Path
STS Path Status LED
. Indicates if any of the errors or
alarms within this portion of the overhead are being received.
This is a status LED.
AIS-P
STS Path Alarm Indication Signal
. Indicates if an alarm is
being received from upstream Path terminating equipment.
This is an alarm LED.
RDI-P
STS Path Remote Defect Indicator
. Indicates that a remote
alarm is being received from downstream Path terminating
equipment. The G1 byte of the SONET Path Overhead is
used for this indicator. This is an alarm LED.
LOP-P
STS Path Loss of Pointer
. Indicates that an invalid Pointer
has been received or a Pointer loss has been detected on the
incoming SONET signal. This is an alarm LED.
REI-P
STS Path Remote Error Indicator
. Indicates that an error
count is being received from downstream Path terminating
equipment. An REI is also known as a Far-End Block Error
(FEBE). This is an error LED.
PTR-P
STS Path Pointer Adjustments
. Indicates Pointer offsets or
adjustments between the STS payload and the OC-N frame
are occurring. This is a status LED.
B3
STS Path Overhead BIP-8 Code Violations
. Indicates that
parity errors were detected at the Path layer of the incoming
SONET signal. This is calculated over the Path OH and
payload of each STS-1. This is an error LED.
UNEQ-P
STS Path Unequipped Payload
. Indicates that a 00h pattern
has been detected in the C2 byte. This byte is being received
from Path terminating equipment. This is an alarm LED.
VT
Virtual Tributary Status LED
. Indicates if any of the errors
or alarms within this portion of the overhead are being
received. This is a status LED.
This section is only available when VT-1.5, VT-2 or VT-6 is
mapped.
MPA_e_manual_D07-00-129P_RevA00
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