Panasonic P341i - Manual (Page 35)

36
Voic
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Voice calls
Using the notepad
During a call you can enter numbers that you may want to dial when you have finished
the call. You can make a note of these numbers on the notepad.

Enter the number.

When you have finished your call, press D to dial the number.
or

Press L while the number is displayed to store the number in your Contacts List.
The current call remains active.
In call options
During a call select Menu to access the following menus:
Schedule, Contacts List, and Memo.
For information on using these menus, see the relevant section in this user guide.