No Sound on calls

[Eildert Groeneveld]

dear List

as of lately, the FR has no sound when making phone calls which may
be considered a slight disadvantage.
Wenn called the FR rings nicely but then everything is dead: no sound.
Likewise, when calling someone, nothing can be heard, not the ringing 
and after the connection is established also not the opposite.

Oddly, the happens with the current FSO and hackable1

any idea?

greetings

Eildert