2.5
Auxiliary Connection for Power Failure
Transfer
Feature References
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.
Section 3, Features
Paralleled Telephone
Power Failure Transfer