Cluster egress goes through a step-ca-fronted TLS proxy that install-sounds
doesn't trust ("SSL certificate problem: self-signed certificate"). The
Asterisk core sounds tarball is a public artifact; integrity is enforced
downstream when Asterisk plays the file.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The install-sounds init container was a stub that left /var/lib/asterisk/sounds/en
empty. Result: every SpeakText fallback path (vm-advopts, vm-goodbye, characters:*,
digits/*, beep, pbx-invalid) resolved to a missing file, Asterisk silently failed
each Playback, zero RTP was produced, and callers heard dead air. This is why
dialing *0 (Settings Menu) or *100 (Debug IVR) "picks up quietly" — there is
literally nothing to stream.
Replaced the stub with alpine:3.20 + curl + tar that downloads the pinned
asterisk-core-sounds-en-ulaw-1.6.1.tar.gz (~10 MB) from downloads.asterisk.org
and unpacks it into the sounds emptyDir. Idempotent — skips download if
vm-goodbye is already present.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
