ATT System 25 Installation And Maintenance Manual

MAINTENANCE
Messages displayed on the SAT indicate which restart is being performed. The
same type of information is displayed for a cold and a warm restart. This
information consists of a listing of the version of the firmware loaded in the
CPU/Memory CP and a configuration
The CPU/Memory CP is not listed in
be located in slot 1 of Cabinet 1.
Table 4 A provides a listing of SAT
cold or warm restart. The displayed
and port translations.
listing of all CPs recognized by the system.
the configuration...

MAINTENANCE
The SAT message for a cold restart appears after the system has performed
all self-tests and reading of its configuration. The time required for a cold
start depends on the number of CPs in the system but is generally several
minutes.
A typical Release 2 cold restart SAT message is as follows:
RESTART
TS ROM pair
FC ROM pair
FC ROM pair
FC ROM pair
C0LD START
SLOT
1
2
3
4
5
6
7
8
9
10
11
12
1: version 3.5 *
1: version 3.13 *
2: version 3.13 *
3: version 3.13 *
CABINET 1
ZTN85 06
ZTN79 03...

MAINTENANCE
ERROR LOG
When a system maintenance object fails periodic testing, the system
automatically generates an error record.Depending on severity, the record is
stored in one of three tables in the Error Log. The Error Log contains the
following three error tables:
l Permanent System Alarms:These are failures that cause
degradation of service and require immediate attention. These
alarms will light the Alarm LED on the Attendant Console and are
stored in the Error Log Permanent System Alarm table....

MAINTENANCE
A typical error record from the Permanent System Alarms and Transient
System Errors table is as follows:
PERMANENT SYSTEM ALARMS
PORTBOARD FIRSTLASTCOUNT NAME
NUMBER CODEOCCURRED OCCURRED
10400ZTN130 23/12:30
Interpret this record as follows:
l“Port Number” 10400
specifying the location30/01:56
1Port Board missing
But Administered
is the 5-digit port identification number
of the error.The first digit indicates the
cabinet
(01-12),
the slot
l“Board(1-3), the next two digits indicate the slot...

MAINTENANCE
Error records in the Most Recent System Errors table have a slightly different
format. A typical error record from the Most Recent System Errors table is
MOST RECENT SYSTEM ERRORS
PORTBOARD DATETIMENAME
NUMBER CODEOCCURRED OCCURRED
30300ZTN131 03/12/852:01:56
Port Board Missing
But Administered
Interpret this record as follows:
l“Port Number” 30300 is the 5-digit port identification number.
l“Board Code” ZTN131 is the circuit pack on which the error
occurred (or that is associated with the...

MAINTENANCE
The Error Log is under the control of internal background maintenance
software that automatically escalates an error to a more serious category or
retires it. The system tests itself after a repair has been made. If the error
condition is corrected, the error may be removed from the Error Log.
Although some errors are automatically retired from the Error Log, they can
also be manually retired by entering commands at the SAT. Alarms,
conditions that light the alarm LED on the attendant...

MAINTENANCE
9.
10.
11.
12.
.
If youEnter 1 and press .
The SAT displays:
SEARCHES: ACTlON=1 DATA=
Enter D.
The system completes the word Data followed by the = sign.
After Data= enter one of the following numbers, depending on
which error table you wish to see:
l 30 to see Permanent System Alarms
l 31 to see Transient System Errors
l 32 to see Most Recent System Errors.
select 30, for example, the system responds with: SEARCHES:
Action=1 Data= 30.
Now, enter the letter c to begin the search of this...

MAINTENANCE
ERROR MESSAGES
Error messages,
along with the alarm indicators, are the most likely
indicators that an error has occurred in the system. When a maintenance
object fails periodic testing, the system automatically generates an error
record. The error record (log) is accessible through the SAT. The following
table lists and describes error messages that can be displayed on the SAT.
The table also includes possible solutions for some of the errors that are
encountered.
If the recommended solution...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTION
POSSIBLE SOLUTION
AC Power Failure: An indicationCheck plug at wall receptacle. If
that ac power has been lost (forthis error occurs more often than
example, plug removed from athe building power outages, check
wall receptacle, building power
connection to wall.
down for more than a quarter of a
second, etc.). If power is lost from
the first cabinet, the ETU will be
triggered.
Alarm Log Overflow: The errorCorrect indicated errors, and then
logs are full and no...

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTIONPOSSIBLE SOLUTION
Bad Port: (STARLAN InterfaceRecoverable; no action required.
CP) This error is an isolated
transient condition.
Bad Ringing Supply: ProblemsCheck ring voltage on associated
detected with ringing portion ofpower supply (see Figure 4-2).
power supply.
Belated External Release: 
SeeNormally, no action required;
“No External Release on PBXhowever ifproblem persists,
Disconnect. ”check for faulty trunk (see Figure
4-3).
BufferDeallocationFailure:If...