Pulling up a few other log snippets, I think the *99 direct VM transfer feature was working for these calls. I can see the ulaw files playing for the caller and whatnot. So there was some wolf-crying in that regard. And the PasteBin snippet wasn’t a good example anyway since it was truncated. Sorry about that!
It seems in retrospect that the FOP function button was the only element that wasn’t working. And the manual feature code direct VM transfer was punched through too deliberately so the callers always missed the VM greetings, assumed it was just dead air, and hung up. Restarting the Asterisk resolved whatever issue involving the FOP.