The certificate lives in data/tls (fullchain.pem + privkey.pem), mounted read-only into asterisk and the api. Asterisk quietly drops transport-tls when the files are missing, so the api won't turn TLS on unless they load and match, shows the certificate on Settings -> Security, and warns on the dashboard when it expires within 14 days. scripts/tls-cert.sh copies it from the bundled Caddy (or given paths) and reloads res_pjsip: Asterisk 24 re-reads a changed certificate on reload, calls stay up. transport-tls checks the provider's certificate (verify_server). Asterisk 24 checks a qualify's certificate against the IP instead of the name, which fails on voip.ms, so TLS trunks don't qualify; REGISTER and INVITE verify the name fine. Task: M11-T2