Panasonic KX-T336 System Reference Manual page 663

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1.3,
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6. Select "UNAl ,- "UNA2" -Ext." or "Remote- by pressing the F6
key (select).
UNA 1 : External Pager 1
UNA 2 : External Pager 2
Ext. : Extension *
Remote : Remote maintenance port
* If "EXT." is selected, the extension directory number must
be entered successively.
7.
?ress the F7 key (memory).
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