ATT System 25 Installation And Maintenance Manual

4.Press the REWIND button, and wait for the unit to
tape. This step ensures that the tape is played from
Note:The systemautomatically compensates for
“leader” material at the beginning and end of the
Saving Translations
Follow these steps to save
1.
2.
3.
4.
5.
6.
7.
8.
translations on tape:
MAINTENANCE
fully rewind the
the beginning.
the clear
tape.
Complete the steps listed above under “Setting Up the DTU. ”
Press both the RECORD and PLAY buttons
unit should not yet begin to run.)
Log on to the SAT (if...

MAINTENANCE
9.
10.Press c to continue, and the tape unit is automatically started by the
system. Saving translations on tape takes about 5 minutes and does
not affect switch performance.
When the save is complete, the unit stops automatically.
If the save is successful, the SAT displays:
SAVE COMPLETED SUCCESSFULLY.
Press the REWIND button and rewind the tape fully.
Verify the translations saved on the tape, followingthe steps in the
next procedure.
Verifying Translations
Always verify the translations...

MAINTENANCE
5.
6.
7.
.
8.
9.
10.
Enter 2.
The system responds with:
Save/Restore: Action=2 Data=.
Enter D.
The system completes the word Data followed by the = sign.
Enter 1.
The system responds with the complete line:
Save/Restore: Action=2 Data=1
W25: YOU ARE ABOUT TO START A TAPE VERIFY
c for continue, any other key for abort
Press c to continue, and the tape unit is automatically started by the
system. Verifying translations takes about 5 minutes.
When verification is complete, the unit stops...

MAINTENANCE
Restoring Translations
 Note:Restoring translations from tape removes the system from
operation for about 5 minutes.
When it is necessary to restore system translations from tape, follow these
steps:
1.
2.
3.
4.
5.
6.
7.
Complete the steps under “Setting up the DTU,” using the cassette
on which translations were saved.
Press the PLAY button on the tape unit. (The unit will not run at this
time.)
Log on to the SAT, if not already logged on.
The system displays the main menu prompt:
Make one...

MAINTENANCE
8.
9.
10.
11.Press c for continue, and the tape unit is automatically started by the
system. Restoring translations takes about 5 minutes.
When restoration is complete, the unit stops automatically.
If restoration is successful, the SAT displays:
(feature code issue, date, time, size)
followed by:
RESTORE COMPLETED SUCCESSFULLY
Initiated warm start
If above message is not displayed on the SAT, restoration was
probably not successful.Force a warm start of the system and
check the restart...

MAINTENANCE
ROUTINE MAINTENANCE
The following are general trouble-clearing techniques usually required to
resolve system-detected and/or user-detected troubles.
l Reseating and Replacing Circuit Packs
lRemoving and Restoring Power
lRestarting the System.
Reseating and Replacing Circuit Packs
Except for the CPU/Memory and Service CPs, power can be left on while a
CP is reseated or replaced.When possible, CPs should not be removed
when the amber LED is lighted.
Note:When a CP is removed from an unused slot...

MAINTENANCE
6.Inspect the cabinet backplane and the connectors at the back of the
CP. It may be possible to clean dirty connectors per prescribed
procedures and return the CP to service. However, if any
connectors are damaged or corroded the CP should be replaced.
7.Rest the CP on a firm nonconducting surface, and press in all
socketed devices on the CP to be sure that they are firmly
connected. Ensure that all straps (if there are any) are firmly seated.
To Replace or Reseat a CP:
1.
2.
3.
4.
To reseat...

MAINTENANCE
Removing andRestoring Power
When the following procedures are performed, the system must be
unplugged from the ac power source:
l
l
l
lReseating or replacing the Service Circuit or CPU/Memory CPs
Replacing the frontplaneribbon connector between the Call
Processor and Memory CPs (Release 1 only)
Replacing the power supply
Replacing the fan assembly.
Danger: The System 25 cabinet(s)
This equipment must be
technicians..
Before removing power from one or
tape backup. To save translations,
Digital...

MAINTENANCE
Restarting the System
The system automatically warm starts after power is restored. (The system’s
maintenance software may restart the system under certain self-detected
error conditions. ) There are two types of restart: cold and warm.
A Cold Start and limited cold start (which takes about 4 to 5 minutes) causes
the system to check all slots for valid CP types and assign default
translations to all ports except auxiliary trunk ports. Current translations are
not retained. This means that all...

MAINTENANCE
6.
7.
8.
9.Enter 9 (for the SAVE/RESTORE selection) and press .
The system responds with:
Action=
Enter 10 for a warm restart.
The system responds with:
Save/Restore: Action=10 Data=.
Enter D.
The system responds with:
Data=
10.Enter 1.
The system responds with:
Save/Restore: Action=10 Data=1
YOU ARE ABOUT TO FORCE A WARM START
c to continue, any other key for abort.
11.
Enter c to initiate the warm restart.
To perform a cold restart, follow the preceding steps for Restarting the
System,...