Glossary core

Glossary sheet. Definitions are the campus teaching lines, not a vendor glossary copy.

Accessed 14 October 2026. Open the in-app glossary for the config note and the fault.

Microsoft 365 tenant — The boundary that holds Entra ID, licenses, Teams policies, and verified domains for one organization.

Verified domain — A domain added and proven in the tenant. Direct Routing SBC FQDNs must live on one of these domains.

onmicrosoft.com domain — The default tenant domain. It is not a supported domain for a Direct Routing SBC FQDN.

Homed online — Direct Routing users must be homed in Microsoft 365, not left on a Skype for Business on-premises registrar.

Islands mode — A coexistence mode. Direct Routing is not supported for users in Islands mode.

Entra ID — The identity directory for the tenant. Teams users, resource accounts, and admin roles are Entra objects.

Resource account — A disabled-for-sign-in Entra account that represents an auto attendant or a call queue. It is not a human login.

Cloud Voicemail — The Teams voicemail service. It deposits messages in the user’s Exchange mailbox.

Teams Phone — The license capability that lets a user use Teams as a phone system. It is not, by itself, a PSTN carrier.

Calling Plan — A Microsoft-operated PSTN option. Domestic, international, and pay-as-you-go are the usual flavors. It is an extra license on top of Teams Phone.

Audio Conferencing — The license that provides dial-in numbers for meetings. It is not Teams Phone.

Teams Premium — An add-on for advanced meetings and related features. It does not replace Teams Phone or a Calling Plan.

Teams Phone Resource Account license — The license each auto attendant or call queue resource account needs, even when the account has no phone number. Subscriptions with Teams Phone include a zero-cost allotment you still have to acquire.

Pay-as-you-go Calling Plan — A Calling Plan billed on use. Also the funding pattern, with communications credits, for some voice-app outbound calls.

Communications credits — A balance used when a call is not covered by a Calling Plan minute. Voice apps use it for some outbound cases.

Shared Calling — A pattern where users place outbound PSTN calls through a resource account’s number instead of each having a number.

Sources and go deeper

Plan Direct Routing — Microsoft Learn — last checked 2026-10.
Use Teams admin roles — Microsoft Learn — last checked 2026-10.
Manage resource accounts — Microsoft Learn — last checked 2026-10.
Cloud Voicemail — confirm — last checked 2026-10. Did not open when checked. HTTP 404.
Teams Phone licensing — Microsoft Learn — last checked 2026-10.
Calling Plans — Microsoft Learn — last checked 2026-10.
Teams add-on licensing — Microsoft Learn — last checked 2026-10.
Teams Phone Resource Account licenses — Microsoft Learn — last checked 2026-10.
Voice app prerequisites and licensing — Microsoft Learn — last checked 2026-10.
Security, Compliance, and Identity Fundamentals — Microsoft Learn — last checked 2026-10.
Prepare the network for Teams — Microsoft Learn — last checked 2026-10.
QoS in Microsoft Teams — Microsoft Learn — last checked 2026-10.
Plan Operator Connect — Microsoft Learn — last checked 2026-10.
Plan Teams Phone Mobile — confirm — last checked 2026-10. Did not open when checked. HTTP 404.
Create and manage dial plans — Microsoft Learn — last checked 2026-10.
Manage voice routing policies — Microsoft Learn — last checked 2026-10.
Emergency locations, addresses, and routing — Microsoft Learn — last checked 2026-10.
Set up an auto attendant — Microsoft Learn — last checked 2026-10.
Set up a call queue — Microsoft Learn — last checked 2026-10.
Location-based routing — Microsoft Learn — last checked 2026-10.
Survivable Branch Appliance — Microsoft Learn — last checked 2026-10.
SIP Gateway — Microsoft Learn — last checked 2026-10.
Use Call Analytics — Microsoft Learn — last checked 2026-10.
What is Call Quality Dashboard — Microsoft Learn — last checked 2026-10.
Dynamics 365 Contact Center — Microsoft Learn — last checked 2026-10.
Study guide AB-250 — Microsoft Learn — last checked 2026-10.
Teams contact center integration models — Microsoft Learn — last checked 2026-10.
Teams Phone extensibility — Microsoft Learn — last checked 2026-10.
Cisco Unified Border Element — Vendor — last checked 2026-10.
Azure Communication Services Call Automation — Microsoft Learn — last checked 2026-10.
Azure AI Speech overview — Microsoft Learn — last checked 2026-10.
Copilot Studio overview — Microsoft Learn — last checked 2026-10.
Azure AI Foundry documentation — Microsoft Learn — last checked 2026-10.
Study guide MS-700 — Microsoft Learn — last checked 2026-10.
Retired certification exams — Microsoft Learn — last checked 2026-10.
Partner Center July 2026 announcements — Microsoft Learn — last checked 2026-10.
Azure Fundamentals — Microsoft Learn — last checked 2026-10.
Introduction to Teams recording — Microsoft Learn — last checked 2026-10.
Set up compliance recording — Microsoft Learn — last checked 2026-10.
New-CsTeamsComplianceRecordingPolicy — Microsoft Learn — last checked 2026-10.
AudioCodes session border controllers — confirm — last checked 2026-10. Did not open when checked. HTTP 404.
Ribbon Communications — Vendor — last checked 2026-10.
Oracle Session Border Controller — confirm — last checked 2026-10. Did not open when checked. HTTP 403.
Certified SBCs for Direct Routing — Microsoft Learn — last checked 2026-10.
PSTN connectivity options — Microsoft Learn — last checked 2026-10.
Set up Teams Phone — Microsoft Learn — last checked 2026-10.
Teams Administrator Associate — Microsoft Learn — last checked 2026-10.
Computer telephony integration — Wikipedia — last checked 2026-10. Wikipedia fallback for background. Confirm the vendor page before you change a tenant
Introduction to the voice channel — Microsoft Learn — last checked 2026-10.
Configure Teams Phone in the voice channel — Microsoft Learn — last checked 2026-10.
Connect Voice from a Partner Contact Center — Vendor — last checked 2026-10.
What is Amazon Connect Customer — Docs — last checked 2026-10.
Contact Center AI Platform — Docs — last checked 2026-10.
Google Cloud legal change log — Vendor — last checked 2026-10.
Assignment methods for unified routing — Microsoft Learn — last checked 2026-10.
Configure quality and coaching — Microsoft Learn — last checked 2026-10.
Overview of forecasting — 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
RFC 3261 — RFC — last checked 2026-10.
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