Well, it happened again, this morning. Both URI's on same usb buss, but this time it was the UHF repeater URI

that failed. Previously, it was the vhf simplex node that was 'sensitive'.

Shutting down and restarting asstorisk doesn't do it, but

Hehe, interesting isn't it.. - how it's beaten into us that this cheapo consumer-junk USB interface is better and more reliable than onboard sound devices. When have you ever seen an onboard sound device vanish?