Panasonic KX-TG4000B - Adding Another Phone

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Adding Another Phone
Chapter 5
Useful Information
If the backup battery has been discharged during a power failure, the unit
will not work. If required, you can connect a standard telephone on LINE 2
or LINE 4 of this unit using the Panasonic T-adaptor KX-J66.
To order, call the accessories telephone number on page 3.
Single-Line
Telephone Jacks
Standard Telephone
LINE4
T-Adaptor
(KX-J66)
LINE3
T-Adaptor (KX-J24)
(See page 15.)