SIP over TLS toward the carrier

Signaling for Teams Phone into the voice channel. Teams keeps the dialog. A 488 is codecs, not a greeting.

Sources and go deeper

Same checked list as T18-R03-teams-phone-into-the-voice-channel.html.

• Configure Teams Phone in the voice channel — Microsoft Learn — last checked 2026-10.
• Microsoft Teams — Wikipedia — last checked 2026-10. Wikipedia fallback for background. Confirm the vendor page before you change a tenant

sources.json

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