Charles & Sandra Cohen
I'm working from memory (which is unreliable), but here's something to explore:
The IC-7000 may have a feature called "Voice Squelch". It's unrelated to "RF Squelch", which is sensitive to signal strength.
"Voice Squelch" squelches the audio when it perceives that the audio doesn't seem to be someone speaking. It is often wrong in its judgement.
. . . Make sure that Voice Squelch is _off_, for normal ham operating.
. Charles / va7cpc