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1152700• Issue 1 • February 2001 • Section 2 Operations and Maintenance
Page 2-434
© 2000, ADC Telecommunications, Inc.
TAP-100
Page 15 of 23
Table 4-1. Alarm Identifications, continued
ALARM
MESSAGE
SEVERITY IMPACT DESCRIPTION SUGGESTED COURSE OF ACTION
Primary
Derived
DS1 Source
Failed
Major Not Service
Affecting
The reference source for
the primary clock has
failed.
Check source (external, optical
in, or other AIC card) for
alarms and correct as
necessary.
Protection
Switch Bytes
Failure
ProtectionSwi
tchBytesFailu
re
Minor Installation
Error
Inconsistent APS byte or
invalid code.
Automatic Protection Switch
(APS) byte is inconsistent with
the expected code. Check
facility interconnections and
verify switching modes match
at each end (i.e., 1:1, 1+1,
1:N).
Protection
Switch
Failure
ProtSwitchF
ailed
Minor –
currently an
information
al alert.
Installation
Error
User initiated or automatic
protection switch failed.
Check protection group for
previously failed/switched
working card, lockout of
protect, or failed protect card.
PEIM must be installed at the
rear of the shelf at the
protection slot for 1:N
protection groups.
Protection
Switch
Successful
ProtSwitchS
uccessful
Information
al
Not Service
Affecting
Protection switch
completed successfully.
User initiated or automatic
protection switch was
completed. No action
necessary.
Protocol
Error
Threshold
Crossing
Alert
ProtocolErro
rTca
Information
al Alert
Service
Degradation
Protocol error threshold has
been crossed.
Caused by the following: 1)
Out of range VPI/VCI, (2)
Invalid PTI values (6 and 7),
and 3) Unassigned VPI/VCI
values. Check the connection
VPI/VCI to make sure the
provisioning is correct for the
expected traffic stream..
Remote
Failure
Indication
RFI
Major Service
affecting
Far end has detected AIS at
the DSX level.
RFI is a near end notification
of a remote failure. For
example, a LOS occurs at the
near end, a RFI line and path is
sent in the reverse direction to
the remote node. An RFI line
is sent if the network element
is a line terminating element
while a RFI path is sent if the
netork element is a path
terminating element.
(continued)