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2.5 Auxiliary Connection for Power Failure
Transfer
2-34 Installation
Power failure transfer connects a specific single line telephone to
selected outside (CO) lines in the event of system power failure, as
follows.
Outside (CO) Line 1 – Extension (T, R) Jack 01
Outside (CO) Line 4 – Extension (T, R) Jack 09
Connection of outside (CO) lines 1 and 4, and the respective
extensions require no auxiliary connection.
Note • In the event of a power failure, system memory is protected by a factory-
provided lithium battery. There is no memory loss except the Camp-on,
Saved Number Redial, Last Number Redial, Call Park and Message
Waiting memories.
• The system automatically changes the current connection to the above
connection when the power supply stops.
• Proprietary telephones cannot be used during a system power failure.
Therefore, we recommend connecting single line telephones in parallel
with the proprietary telephones connected to JACK 01 and 09.
Feature References Section 3, Features
Paralleled Telephone
Power Failure Transfer