ATT System 25 Installation And Maintenance Manual

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
DCFailTransientRecord:No action required; this error
Indicates a dc power failure.display is a record of the start
time of the failure.
DC Power Failed: Indicates theCheck the +5 V dc voltage level
absence of +5 V dc on a cabinet.on the power supply (see Figure
Each cabinet has its own power4-2).
supply; therefore, this may not
cause a warm start.
DC Power Restored:IndicatesIt is possible to produce this error
that +5 V dc has been restored.when...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
DXS Reset; The DXS console hasRecoverable; no action required.
been reset.
ElectronicPowerFeed Off,
Check the wiring for shorts from
Overcurrent:A Hybrid
Linethe backplane/SIP up to the
(ZTN79) port EPF chip shut down.phone jack. Check the ATL set at
Two ports are effected, for
the SIP. Try swapping ATL sets.
example, 1-2,3-4,5-6,7-8.
Error removed if Audit passed and
short removed. Audit runs every 4
minutes.
Electronic Power Feed Overload:Check...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
External Stack Full: (STARLANIf the reset is not successful
Interface CP) This error resets thereseat board. If the reseat fails,
CP.
replace the board.
Fault onOutgoingSeizure:
Check trunk for slow dial tone;
ZTN76/TN747 CO ground was notmore than 10 seconds. Perform
detected within a predeterminedtrunktestcall
per“Trunk
time-frame.ZTN77/747loopTroubles”procedure in this
current was not detected within asection.If the problem persists,...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
Illegal Instruction: This error isThe Problem could be with the
logged when an illegal instructionROM on the CPU/Memory CP. If
is encountered by the CPU.the problem persists, check or
replace CP.
Illegal Interrupt: CPU/Memory CPThe CP may still pass the power-
problem.up test for the ROM. Check or
replace the CPU/Memory CF.
Illegal Port Command: (STARLANRecoverable; no action required.
Interface CP) This error is an
isolated transient condition....

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTION
POSSIBLE SOLUTION
Invalid Message Length: The portIf the problem persists, check or
CP sent an up-link message that
replace the port CP.
is not in the expected message
set.
Invalid Port Board:(Other thanRemove or replace CP with a
CPU or Memory) Port CP not
board that is supported by System
supported by system.25.
Invalid Port Message: The port
If problem persists, check or
CP sent an up-link message that
replace the port CP.
is not in the expected message
set....

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
Memory Management Error: BusPossible
software
error.If
error that occurs while accessingproblem
persists,check or
the “other than protected” RAM.replace CPU/Memory CP. A
A warm start is logged after thiswarm start or retranslation of the
error.
system could be a possible fix for
this problem.
Memory ROM Checksum Error:If this problem persists, replace
Memory has failed the ROM test.CPU/Memory CP.
Message Corruption: (Other thanIf consistent error...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
On-HookBeforeReady To Receive
Digits: For a tie trunk with delay
dial or winkstart—after the
handshake is complete, a 50-ms
guard time must pass before
digits are received. If the far-end
goes on-hook before guard time
elapses, this message is logged.
On-Hook Before Wink: For a tie
trunk with delay dial or wink
start—if the far end goes on-hook
(possibly indicating the beginning
of a rotary dial digit) before the
wink handshake is completed, the...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
Port CPMissingButCheck CP slot; reseat CP; change
“Administered:(OtherthanCP; orremoveCP
from
CPU/Memory) Translated port CPtranslations. If CP does not pass
that CPU cannot access.power-up, replace CP.
Port CP Out Of Service:
(OtherIf the CP has not been removed
thanCPU/Memory)Messageand the problem persists, check
occurs when a CP is removed
or replace the port CP.
from a cabinet. Error removed
when the CP passes power-up.
Port CP ROM Checksum...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
Received Incorrect Number of
DID Digits:
This error indicates
that the CO is set up to send a
number of DID digits different
from what the switch has been
administered to receive.Ensure that trunks are properlytranslated.Notify local CO to
verify the correct number of digits
to be sent. Test trunk per Figure
4-3.
RIMS Insane:Service Circuit or
Tone Detector CP problem.If an “RIMS Sane” occurred, the
system will remove this error from
the...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
ServiceCircuitTestFailed:
Check TDM bus terminator and
Service Circuit demand test failedcabinet interconnect cables. If the
on the DTMF receivers.problem persists, replace ZTN85
or ZTN131 (R3).
Signaling Lead Fault: AuxiliaryCheckwiring of
external
Trunk CP is expecting a groundequipment per Figure 4-7.
from external equipment but none
is detected.
SlotConfigurationError:This condition can be resolved by
(STARLAN Interface CP) Thismoving the...