Super odd issue where a customer is complaining about fluctuating volume on calls. We’re using standard SIP Trunks. FreePBX14 and Asterisk 13. I would assume we are looking at a network issue? No choppiness or jitter or dropped calls. Just audio getting quiet and normal then quiet.
Then if it’s not happening on all calls you need to correlate data on what calls it is happening on. And also make sure this is an actual audio flux and not someone moving the phone away from their mouth and the mic not picking them up at full volume.