To restore the system from the backup file:

• Log in to the system shell as a root user
• Navigate to the opt directory

 cd /opt

• Stop services

 /opt/pbxware/sh/stop
 /opt/httpd/sh/stop

• Unpack backup

 tar --numeric-owner -xvf PATH_TO_BACKUP

Where PATH_TO_BACKUP is a full path to your backup file.

• Start the services

 /opt/pbxware/sh/start
 /opt/httpd/sh/start