SIP over TLS toward the carrier

Signaling for CUCM and CUBE. Teams keeps the dialog. A 488 is codecs, not a greeting.

Sources and go deeper

Same checked list as T14-R03-cucm-and-cube.html.

Cisco Unified Border Element — Vendor — last checked 2026-10.
Create and manage dial plans — Microsoft Learn — last checked 2026-10.
Manage voice routing policies — Microsoft Learn — last checked 2026-10.
RFC 3261 — RFC — last checked 2026-10.
Session Initiation Protocol — Wikipedia — last checked 2026-10. Wikipedia fallback for background. Confirm the vendor page before you change a tenant
Session border controller — 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

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