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Section 700 - Operation Chapter 3. System Features
ICX-50-700 ICX (International) issued October 2000 59
Considerations
• Up to four SLTs can be connected to one PFU.
• For added protection against power outages, backup batteries can be installed in the System.
Backup batteries provide full telephone service and system features to all System extensions for
a limited amount of time. With maximum traffic, the backup batteries last up to 30 minutes in the
ICX.
Power On Maintenance
Description
The System allows you to change most circuit cards, programming, and many other maintenance
features while the System is powered on and operating. Very few operations require the System to be
powered down or out of service. The System therefore continues to operate without interruption for
most maintenance functions.
A limited number of items such as the replacement of some common control circuit cards requires the
system to be powered down.
Hardware Requirements
•N/A
Considerations
•N/A
Programming Devices
Description
The dealer may program the System either by using:
• A digital key telephone equipped with display
• A PC-Based Customizing Tool
Telephone Programming
The System can be fully programmed from an extension telephone equipped with 12 FF keys and a
display. While major system configuration changes may be more easily performed using a PC
programmer, all programming is available via a telephone. This is especially useful for minor changes
to the system configuration.
Hardware Requirements
•N/A
Considerations
•N/A