Hello,
See the procedure provided for an F580 on page 9 (11 of the PDF below)
https://www.alcatel-home.com/sites/default/files/product/828/files/alcatel-phones-f580-voice-mode-emploi-complet-fr.pdf
--
Very difficult to catch a black cat in a dark room.
Especially when it's not there...
What about that...
When you open the call log, if you haven't answered, is the call not recorded with the date and time?