Panasonic ICX Technical Manual page 24

Section 770-Voice Recognition Telephone
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• You can say "Cancel" (or press the Cancel Key) at any point to
display the TOP MENU, allowing you to store new entries or place
a call. This function can be useful if you want to check the contents
of the Phonebook or place a call before deleting all entries.
• If you do not speak or press any keys for three minutes, the Voice
Recognition Mode is ended.
ICX issued August 1998
Chapter 4.Deleting a Phonebook Entry
ICX-25-770