Backup; Determining The Release Number Of A Backup File; Backup Header Release Number - AT&T MERLIN LEGEND Release 3.0 System Programming And Maintenance Manual

Using SPM

Backup

The Backup procedure is
of system programming information in the \spm\backup directory (on the hard -
drive of the PC) or in the root directory of a diskette (on the floppy disk drive of
the PC).
NOTES:
up your system programming information on a regular basis. A
1. Back
current backup file allows you to quickly and easily restore your
system, if the need arises.
With Release 3.0 and later, system programming can be backed up or
2
restored from a PCMCIA memory card. See Chapter 22, "Memory
Card," for more information.
Determining the Release Number
of a Backup File
If you have a backup diskette but do not know its release number, you maybe ,
able to find this information in the backup header. Beginning with later
versions of Release 1.1, the backup file contains a backup header 128 bytes
long. Approximately 59 of these bytes are currently used. Bytes 55 through 59
of the header contain the MERLIN Legend Communication System Release
number, as shown in Table 4. (Release 1.0 and early versions of Release 1.1
do not contain this information in readable form.)
Table

Backup Header Release Number

4.
Release No.
2 bytes
Size
Examples 03 00
02 01
28 System Programming and Maintenance (SPM)
used by qualified service personnel to create a file
Build No. System Size
12 bytes 1 byte
32 01
Mode
1 byte
- Key
01,
02- Behind Switch
03- Hybrid/PBX
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