SIP over TLS toward the carrier

Sources and go deeper

Same checked list as T05-R05-direct-routing.html.

• Plan Direct Routing — Microsoft Learn — last checked 2026-10.
• Certified SBCs for Direct Routing — Microsoft Learn — last checked 2026-10.
• RFC 3261 — RFC — last checked 2026-10.
• Public switched telephone network — Wikipedia — last checked 2026-10. Wikipedia fallback for background. Confirm the vendor page before you change a tenant
• Session Initiation Protocol — Wikipedia — last checked 2026-10. Wikipedia fallback for background. Confirm the vendor page before you change a tenant
• Microsoft Teams blog index — Community — last checked 2026-10. Community index for the Microsoft Teams blog. This is the index, not a claim that a post discusses this room

sources.json