Panasonic KX-TES824 Features Manual page 183

Conditions
• Only one system programming session is permitted at a time. Access will be denied to a second party
who tries to perform system programming, including system programming via a PT.
• System programming can be performed either in interactive or batch mode.
• System Password
To access system programming in interactive mode, a valid password must be entered. The password
is set at the factory but can be changed through system programming (
• A user can upload system programming data from a PC to the PBX or download it from the PBX to a
PC.
• If communications between the PBX and PC fail before completing Firmware Upgrade or system
programming data upload from a PC to the PBX, the successfully transferred portion of the data can
still be used.
• Firmware Upgrade can be performed only through on-site programming using the Serial Interface (RS-
232C) port or USB port.
Installation Manual References
3.2.1 Connection
3.2.3 Accessing PBX via Internal Modem
Feature Guide References
1.1.1.1 Direct In Line (DIL)
3.2 PC Programming
2.3 System Data Control
System Password [002]).
Feature Guide 183