AT&T MERLIN LEGEND Release 3.0 System Programming Manual page 340

Memory Card
Backup
Use this procedure to make a copy of your customized system data. You should
create a backup at Ieast three times during system installation (so that
programmed information is not lost), and once after each system upgrade,
service technician visit, or major system reconfiguration.
The Inspect feature (Inspct or [ PgDn ]) is available to view the attributes of the
backup files on the memory card prior to initiating the backup procedure. The
attributes included on the Inspect screen are the filename, the time and date of
the file creation/update, the location of the system programming port, and
information about the system software release from which the backup was
made.
The list of backup files contains three manual backup filenames and two
automatic backup filenames. The default names of the manual backup files are
Back1.***** , BACK2. *****, and BACK.*****. When you select one of the backup
filenames, the system automatically replaces the stars in the filename with the
current month and day ( [ mmdd ] ). For example, BACK1.0116 would appear if you
selected BACK1.****** and performed the backup procedure on January 16. You
can rename any of the three default files during the backup procedure. The
automatic backup filenames are AUTO. BACK1 and AUTO. BACK2. You cannot
change the names of these files.
If you enter a filename that currently exists, the message File already exists
appears. You must enter another filename.
While the backup is in progress, you cannot access system programming
functions, your Personal Directory, or alarm clock functions (any programmed
alarms are temporarily deactivated). You may terminate the backup procedure
at any point prior to receiving confirmation of a successful backup.
If any type of programming is taking place at another extension when you begin
the backup procedure, the backup is canceled and the number of the first busy
extension appears on the screen. Attempt the backup procedure again when
the busy extension becomes idle.
If the system is turned off during a backup procedure, the backup is terminated.
The system performs a System Reset (cold start), after which you may repeat
the backup procedure.
If Home or Menu are pressed during a backup procedure, the backup is
terminated. This may result in the deletion of an old backup file. See Chapter 1,
"Programming Basics, " for detail about these keys.
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Common Administrative Procedures