Maintenance Description
9-18 Issue 8.0 July 2002
incoming (from OC12) path AIS A Path AIS has been detected on an
incoming STS-1 tributary of an OC12 signal.
The OC12 port in question is provisioned as
a DRI cross-connect (1-Way-DRI,
2-Way-DRI, or 2-Way-DRI-Pri).
Likely causes: Failure of upstream
equipment, which includes the STS-1 path
(for example, failure of an OC-12 pack in the
upstream OC12 equipment). If the upstream
NE is an FT-2000 then a “delete” of a drop
cross-connection may have been
performed.
incoming (from OC-48) DS3 AIS A DS3 alarm indication signal (AIS) has
been detected on one or more of the DS3
signals coming from an OC-48 line.
Likely causes: Failure of an upstream DS3
source equipment.
incoming (from OC-48) DS3 LOF A DS3 loss of frame (LOF) condition has
been detected on an incoming DS3 signal
from the OC-48 line.
Likely causes: Failure of an upstream DS3
source equipment or DS3 circuit pack.
incoming (from OC48) path AIS An STS-1 path alarm indication signal (AIS)
has been detected on one or more of the
STS-1 tributaries of the OC-48 line.
Likely cause: Failure of far-end DS3 or
STS1E circuit pack.
incoming (from OC48) STS LOP An STS-1 loss-of-pointer (LOP) condition
has been detected on an incoming
synchronous transport signal (STS-1) from
an OC-48 line.
Likely cause: Failure of the upstream
TRMTR circuit pack.
incoming (from STSX1) EC1 LOF An EC-1 loss-of-frame (LOF) condition has
been detected on an incoming EC-1 line
from the STSX-1.
incoming (from STSX1) EC1 LOP An EC-1 loss-of-pointer (LOP) condition has
been detected on an incoming EC-1 line
from the STSX-1.
incoming(from STSX1) EC1 LOS An EC-1 loss-of-signal (LOS) condition has
been detected on an incoming EC-1 line
from the STSX-1.
Table 9-2. Condition Descriptions (Contd)
Description (from Retrieve-Alarm Report) Meaning
To Next Page
Loading...