I use a Panasonic KX-TG5839ALS phone, and while a caller is leaving a message I do the following;a/ When I pick up the phone (while the other party is leaving a message) to talk to them, I can hear them,
but they can't hear me! I must hang up and call back. Can this be fixed?
1. Press Talk to answer (at this point I can hear them, but they can't hear me)
2. On my screen I see displayed "Recall" (this will access the dial tone or call waiting service)
and there's an arrow pointing to a function button. Press this once to hear a dial tone
3. Press same button again to come back to caller. Now they can hear me properly!
Perhaps other phones have a similar function button.
This info was contributed by David Kovacevic. Thank you.