# Microsoft Teams Cloud Voicemail

Canonical: https://warmtransfer.net/knowledge/teams-cloud-voicemail

Last verified: 2026-09-25

Microsoft Teams Cloud Voicemail is automatically set up and provisioned for Teams users without requiring a Microsoft Teams Phone license[^14]. Messages are delivered to and stored directly in the user's Exchange Online or Exchange Server mailbox, as Cloud Voicemail maintains no separate message store[^48].

## Architecture and Storage

Cloud Voicemail does not support third-party email systems, requiring all voicemail messages to land in an Exchange mailbox[^15]. Custom recorded voicemail greetings are not stored in the Exchange mailbox; instead, they are held in Azure Media Services and fetched during incoming calls[^9]. 

Voicemail recording and transcription execute in the Microsoft 365 cloud region where the call is processed before the resulting message is delivered to the recipient mailbox[^29]. Cloud Voicemail sends messages over SMTP from the address noreply@skype.voicemail.microsoft.com[^38][^46]. These generated messages are not DKIM-signed, and any recorded message with a duration under 1 second is not delivered[^17][^46].

Exchange Server mailboxes receive voicemail via SMTP routed through Exchange Online, requiring configured connectors between Exchange Server and Exchange Online[^18]. To ensure the Teams client displays voicemail, connectors must preserve the item class so messages retain the IPM.Note.Microsoft.Voicemail.UM message class[^13].

## Routing and Policies

In Teams admin center calling policies, "Voicemail for inbound calls" defaults to "Let users decide," with alternative options of "On" and "Off"[^49]. In PowerShell, administrators configure this using `Set-CsTeamsCallingPolicy -AllowVoicemail`[^2]. See also [Teams voice administration with PowerShell](https://warmtransfer.net/knowledge/teams-powershell-voice-admin).

| Value | Behavior |
| --- | --- |
| AlwaysEnabled | Unanswered calls go to voicemail after 30 seconds; unanswered-call setting is hidden[^2] |
| AlwaysDisabled | Calls never go to voicemail[^2] |
| UserOverride | Routing follows the user's forwarding and unanswered settings[^2] |

Setting `-InboundPstnCallRoutingTreatment` or `-InboundFederatedCallRoutingTreatment` to `Voicemail` sends calls directly to voicemail without presenting them, taking precedence over other forwarding rules and disconnecting the call if voicemail is not enabled for the user[^10]. Disabling voicemail via Teams calling policies might also disable voicemail for Skype for Business users[^39].

In default voicemail policies, transcription and transcription translation are enabled, transcription profanity masking is disabled, and the maximum recording duration is 5 minutes[^26][^25][^6]. Policy `MaximumRecordingLength` can be configured between 30 seconds and 10 minutes[^12]. Preconfigured policy instances `TranscriptionDisabled` and `TranscriptionProfanityMaskingEnabled` cannot be edited or removed[^28]. Changes to voicemail policies can take up to 5 minutes to take effect due to a 5-minute service cache refresh cycle[^24].

A voicemail policy can specify a preamble audio file before the greeting and a postamble audio file after it; `-PreamblePostambleMandatory` defaults to False and dictates whether callers are disconnected if these files cannot play[^27]. Primary and secondary system prompt languages must be set together, must differ from each other, and override the user's prompt language when defined[^30]. System greetings play using the policy's prompt languages if defined, falling back to the user's preferred language, and then to the tenant default language[^8].

For users with a Microsoft Copilot license, an AI voicemail triage feature (providing summary, importance, category, and suggested actions) is in an English-only private preview configured solely via PowerShell[^1]. The `EnableVoicemailTriage` parameter defaults to False, operates only for tenants enrolled in the Voice Applications private preview, and Microsoft states that general availability has not been determined[^56].

## User Configuration and Greetings

Users configure their personal settings in Teams under Settings > Calls > Manage Voicemail[^58]. Default per-user settings enable voicemail, set the answering rule to Regular Voicemail, disable out-of-office greetings, set no transfer target, and contain no default greeting overwrites[^59]. Admins can disable voicemail for an individual user using `Set-CsOnlineVoicemailUserSettings -VoicemailEnabled $false`[^7].

The Teams admin center call answering mode allows callers to leave a message, plays a greeting with no option to leave a message, or declines the call without a message[^3]. In PowerShell, `Set-CsOnlineVoicemailUserSettings -CallAnswerRule` supports `DeclineCall`, `PromptOnly`, `PromptOnlyWithTransfer`, `RegularVoicemail`, and `VoicemailWithTransferOption`[^4]. The `TransferTarget` parameter requires the SIP URI of an in-organization user, though a telephone number can be used if the user is Enterprise Voice-enabled[^54].

Text-to-speech default greetings (`DefaultGreetingPromptOverwrite`) and out-of-office overwrites (`DefaultOofGreetingPromptOverwrite`) play only when a user has not recorded a custom greeting[^57]. Out-of-office greetings are triggered explicitly via `OofGreetingEnabled`, or automatically through Outlook automatic replies (`OofGreetingFollowAutomaticRepliesEnabled`) or out-of-office calendar events (`OofGreetingFollowCalendarEnabled`)[^21].

## Transcription and Languages

Transcription uses the language detected within the recorded message rather than the recipient's configured language[^52]. If transcription translation is enabled, the detected language is translated into the recipient's preferred language, falling back to the tenant default language[^55]. When transcription is disabled, the voicemail notification email states that audio quality was insufficient for transcription[^53].

Transcription language support aligns with the Azure Speech Fast Transcription multilingual model, though Microsoft notes the Teams language documentation may lag behind Azure Speech[^51]. As of 2026-09-25, transcription is documented as unavailable for languages including Bulgarian, Catalan, Croatian, Estonian, Latvian, Lithuanian, Romanian, Slovak, Slovenian, Vietnamese, and Welsh[^16]. Certain regional variants fall back to a base transcription model, mapping en-GB, en-AU, en-CA, and en-IN to English (United States), and fr-CA to French (France)[^35].

## Protected Voicemail

Protected voicemail applies Microsoft Purview sensitivity labels via auto-labeling rules to encrypt voicemail and restrict forwarding for Exchange Online mailboxes[^34]. The auto-labeling rule targets the header `Content-Class = Voice-CA` alongside Microsoft Teams sender IP ranges defined in ID 12 of the Office 365 URLs and IP ranges list[^31]. Protected voicemail cannot be opened within Microsoft Teams or Skype for Business[^32].

## Shared Voicemail

Auto Attendants and Call Queues can redirect callers to Shared Voicemail targeting a Microsoft 365 group, distribution list, or mail-enabled security group[^41]. See also [Microsoft Teams auto attendants and call queues](https://warmtransfer.net/knowledge/teams-auto-attendant-call-queue). Because any member of a shared group can manage all received voicemails, Microsoft recommends establishing separate groups for each Call Queue or Auto Attendant[^42].

Shared Voicemail appears in the regular Teams client only when directed to a Microsoft 365 group associated with a Call Queue through its channel; distribution lists and mail-enabled security groups do not show in Teams, though all three types are accessible via Outlook and the Queues app[^43]. Auto Attendant redirections allow enabling or suppressing a system greeting without support for custom greetings, whereas Call Queues support custom Shared Voicemail greetings for overflow, timeout, and no-agents conditions[^40].

## Troubleshooting and Delivery Diagnostics

Administrators can validate user configurations using the Voicemail self-help diagnostic located in the Teams admin center Dashboard under Self-help diagnostics by providing the user's email address[^37]. 

Mail rules blocking `noreply@skype.voicemail.microsoft.com` will prevent message delivery[^38]. Similarly, Exchange transport rules acting on SPF failures or targeting MP3 attachments can prevent delivery to mailboxes[^11]. Microsoft documents workarounds including adding Teams cloud service IP addresses to the SPF record or creating transport rules to bypass spam filtering for Cloud Voicemail from those addresses[^47]. If `OpenDomainRoutingEnabled` in Exchange Online is set to True, the message `Content-Class` becomes `unauthenticatedVoice-CA`, preventing Teams from identifying the message as voicemail; correcting this requires a Microsoft Support ticket to set it to False[^22].

When voicemail arrives in Outlook but fails to display in Teams, admins should run the Teams Voicemail test in Microsoft Remote Connectivity Analyzer and verify whether mail flow rules, third-party filters, EWS access policies, or Exchange Client Access Rules are modifying headers or blocking access[^23].

## Applicability

Applies to: Microsoft Teams Cloud Voicemail, MicrosoftTeams PowerShell module, and Microsoft Teams Auto Attendants. Deployments: hybrid and multi-tenant. Sources checked 2026-09-25. Managing voicemail policies in the Teams admin center is unavailable in GCC High and DoD environments[^50].

## What remains uncertain

Sources disagree on whether Teams users with on-premises Exchange mailboxes can view and play voicemail in Teams: one setup guide says configuring Exchange OAuth (or running the Exchange Hybrid Wizard from Exchange 2013 CU5 or later) plus Teams-Exchange Server OAuth integration enables visual voicemail in Teams clients, whereas a troubleshooting article states those users receive voicemail in Outlook but cannot view or play it in the Teams client[^20][^19].

Sources disagree on playback clients for protected voicemail: the setup guide says users can listen by opening it in Outlook, Outlook on the web, or Outlook for Android or iOS, whereas the troubleshooting article says Rights Management Services-protected voicemail can be played only in Outlook on the web[^33][^36].

Sources disagree on the `ShareData` policy setting: the voicemail policies page says that when 'share data for service improvement' is false, data is not shared regardless of user choice, whereas the command reference states the parameter is deprecated, has no effect, and is ignored by the service[^45][^44].

## Sources

[^1]: AI voicemail triage (category, importance, suggested actions, summary) is in private preview, applies to users with a Microsoft Copilot license, is configured only through PowerShell, and the preview is English only. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Automatic triaging of Voicemails with AI (available for Private Preview)'. Checked 2026-09-25.
[^2]: Set-CsTeamsCallingPolicy -AllowVoicemail accepts AlwaysEnabled (unanswered calls go to voicemail after 30 seconds and the unanswered-call setting is hidden), AlwaysDisabled (calls never go to voicemail) and UserOverride (routing follows the user's forwarding and unanswered settings). Source: [Set-CsTeamsCallingPolicy (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csteamscallingpolicy), parameter -AllowVoicemail. Checked 2026-09-25.
[^3]: The Teams admin center call answering mode offers three behaviours: the caller can leave a voicemail after the greeting; only the greeting is played and no message can be left; or the service declines the call with no message. Source: [Manage Cloud Voicemail settings - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-settings), section 'Voicemail settings', 'Call answering mode'. Checked 2026-09-25.
[^4]: Set-CsOnlineVoicemailUserSettings -CallAnswerRule accepts DeclineCall, PromptOnly, PromptOnlyWithTransfer, RegularVoicemail and VoicemailWithTransferOption. Source: [Set-CsOnlineVoicemailUserSettings (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailusersettings), parameter -CallAnswerRule. Checked 2026-09-25.
[^5]: In the Teams client, users find voicemail under Calls > History on the Voicemail tab, where transcripts and summaries are shown if available. Source: [Check your voicemail in Microsoft Teams](https://support.microsoft.com/office/f8d568ce-7329-4fe2-a6a2-325ec2e2b419), section 'Check your voicemail' (navigation step). Checked 2026-09-25.
[^6]: The default maximum voicemail recording duration is five minutes. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), introduction defaults list bullet 4; section 'Voicemail policy settings', 'Maximum recording duration'. Checked 2026-09-25.
[^7]: An admin disables Cloud Voicemail for one user with Set-CsOnlineVoicemailUserSettings -VoicemailEnabled $false, after which no voicemail is recorded for that user. Source: [Manage Cloud Voicemail settings - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-settings), section 'Use PowerShell', bullet 3; section 'Voicemail settings', 'Voicemail'. Checked 2026-09-25.
[^8]: System greetings play in the policy's primary and secondary prompt languages if set, otherwise in the user's preferred language, otherwise in the tenant default language. Source: [Change the default language for greetings and emails - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/change-the-default-language-for-greetings-and-emails), section 'Greetings', paragraph 2. Checked 2026-09-25.
[^9]: Users' custom recorded voicemail greetings are stored in Azure Media Services and retrieved by Cloud Voicemail during an incoming call, not in the Exchange mailbox. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Cloud Voicemail storage', final paragraph. Checked 2026-09-25.
[^10]: Setting InboundPstnCallRoutingTreatment (or InboundFederatedCallRoutingTreatment) to Voicemail sends those calls straight to voicemail without presenting them; if the user has no voicemail enabled the call is disconnected, and this takes precedence over other forwarding settings. Source: [Set-CsTeamsCallingPolicy (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csteamscallingpolicy), parameters -InboundPstnCallRoutingTreatment and -InboundFederatedCallRoutingTreatment. Checked 2026-09-25.
[^11]: Exchange mail flow (transport) rules are a documented cause of undelivered voicemail, for example rules that mark messages with MP3 attachments as spam or act on SPF failures; voicemail with SPF failures still reaches Exchange but such rules can keep it out of the mailbox. Source: [Voicemail Messages Aren't Delivered in Teams or Skype for Business Client](https://learn.microsoft.com/en-us/troubleshoot/microsoftteams/phone-system/voicemails-not-delivered), section 'Resolution for Symptom 1', bullet 'Exchange mail flow rules'. Checked 2026-09-25.
[^12]: MaximumRecordingLength in an online voicemail policy must be between 30 seconds and 10 minutes. Source: [Set-CsOnlineVoicemailPolicy (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailpolicy), parameter -MaximumRecordingLength. Checked 2026-09-25.
[^13]: Teams shows a voicemail only if the message class is IPM.Note.Microsoft.Voicemail.UM; for Exchange on-premises, connectors must be set up so SMTP delivery does not strip the item class. Source: [Voicemail Messages Aren't Delivered in Teams or Skype for Business Client](https://learn.microsoft.com/en-us/troubleshoot/microsoftteams/phone-system/voicemails-not-delivered), section 'Resolution For Symptom 2' > 'Exchange Email Connector'. Checked 2026-09-25.
[^14]: Cloud Voicemail is automatically set up and provisioned for Teams users, and a Microsoft Teams Phone license is not required for Cloud Voicemail. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Cloud Voicemail provisioning', paragraph 1. Checked 2026-09-25.
[^15]: Cloud Voicemail does not support third-party email systems; voicemail must land in an Exchange mailbox. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), introduction, paragraph 3. Checked 2026-09-25.
[^16]: As listed on 2026-09-25, the Teams voicemail language table marks transcription as unavailable for, among others, Bulgarian, Catalan, Croatian, Estonian, Latvian, Lithuanian, Romanian, Slovak, Slovenian, Vietnamese and Welsh. Source: [Teams languages for voicemail greetings and messages - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/languages-for-voicemail-greetings-and-messages), language table, 'Transcription available?' column, rows bg-BG, ca-ES, hr-HR, et-EE, lv-LV, lt-LT, ro-RO, sk-SK, sl-SL, vi-VN, cy-GB. Checked 2026-09-25.
[^17]: Voicemail messages generated by Cloud Voicemail are not DKIM-signed. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Cloud Voicemail delivery', Important callout. Checked 2026-09-25.
[^18]: For Teams users with Exchange Server mailboxes, voicemail is delivered by SMTP routed through Exchange Online, so connectors between Exchange Server and Exchange Online must be configured correctly. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Set up Cloud Voicemail for Exchange Server mailbox users', step 1. Checked 2026-09-25.
[^19]: The troubleshooting article says Teams users with on-premises Exchange mailboxes receive voicemail in Outlook but cannot view or play those voicemails in the Teams client (disputed). Source: [Voicemail Messages Aren't Delivered in Teams or Skype for Business Client](https://learn.microsoft.com/en-us/troubleshoot/microsoftteams/phone-system/voicemails-not-delivered), section 'Resolution For Symptom 2' > 'Exchange Email Connector', Note bullet 1. Checked 2026-09-25.
[^20]: The setup guide says that configuring Exchange OAuth (or running the Exchange Hybrid Wizard from Exchange 2013 CU5 or later) plus Teams-Exchange Server OAuth integration enables voicemail features such as visual voicemail in Teams clients for Exchange Server mailbox users (disputed). Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Set up Cloud Voicemail for Exchange Server mailbox users', step 2. Checked 2026-09-25.
[^21]: The out-of-office voicemail greeting can be triggered by an explicit setting (OofGreetingEnabled), by Outlook automatic replies (OofGreetingFollowAutomaticRepliesEnabled), or by an out-of-office calendar event (OofGreetingFollowCalendarEnabled). Source: [Set-CsOnlineVoicemailUserSettings (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailusersettings), parameters -OofGreetingEnabled, -OofGreetingFollowAutomaticRepliesEnabled, -OofGreetingFollowCalendarEnabled. Checked 2026-09-25.
[^22]: If Exchange Online OpenDomainRoutingEnabled is True, voicemail Content-Class changes from Voice-CA to unauthenticatedVoice-CA and Teams cannot recognise the messages as voicemail; the fix is a Microsoft Support request to set it to False. Source: [Voicemail Messages Aren't Delivered in Teams or Skype for Business Client](https://learn.microsoft.com/en-us/troubleshoot/microsoftteams/phone-system/voicemails-not-delivered), section 'Resolution for Symptom 1', paragraphs following 'Get-TransportConfig | fl OpenDomainRoutingEnabled'. Checked 2026-09-25.
[^23]: If voicemail appears in Outlook but not in Teams, Microsoft directs admins to run the Teams Voicemail test in Microsoft Remote Connectivity Analyzer and check for blocking Exchange Client Access Rules, EWS access policies, and mail flow rules or third-party filters that alter headers. Source: [Voicemail Messages Aren't Delivered in Teams or Skype for Business Client](https://learn.microsoft.com/en-us/troubleshoot/microsoftteams/phone-system/voicemails-not-delivered), sections 'Symptom 2', 'Use Microsoft Remote Connectivity Analyzer to diagnose', 'Resolution For Symptom 2'. Checked 2026-09-25.
[^24]: The voicemail service caches voicemail policies and refreshes the cache every 5 minutes, so policy changes can take up to 5 minutes to apply. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), introduction, Important callout. Checked 2026-09-25.
[^25]: In the default voicemail policy, transcription profanity masking is not enabled. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), introduction, 'The default policies for users are' list, bullet 3. Checked 2026-09-25.
[^26]: In the default voicemail policy, transcription is enabled and transcription translation is enabled. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), introduction, 'The default policies for users are' list, bullets 1-2. Checked 2026-09-25.
[^27]: A voicemail policy can play a preamble audio file before the user's greeting and a postamble after it, and PreamblePostambleMandatory (default False) controls whether the caller is disconnected if they can't be played. Source: [Set-CsOnlineVoicemailPolicy (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailpolicy), parameters -PreambleAudioFile, -PostambleAudioFile, -PreamblePostambleMandatory. Checked 2026-09-25.
[^28]: The preconfigured voicemail policy instances TranscriptionDisabled and TranscriptionProfanityMaskingEnabled cannot be edited or removed. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), section 'Edit a voicemail policy', Important callout. Checked 2026-09-25.
[^29]: Voicemail recording and transcription happen where the call is processed in the Microsoft 365 cloud (for example, a Direct Routing call via a European SBC is recorded and transcribed in Europe), after which the message is delivered to the user's mailbox wherever it resides. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Cloud Voicemail processing', paragraphs 1-2. Checked 2026-09-25.
[^30]: PrimarySystemPromptLanguage and SecondarySystemPromptLanguage must be set together, must differ, and when set they override the user's own prompt language. Source: [Set-CsOnlineVoicemailPolicy (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailpolicy), parameters -PrimarySystemPromptLanguage and -SecondarySystemPromptLanguage. Checked 2026-09-25.
[^31]: The documented auto-labeling rule for voicemail matches the header Content-Class = Voice-CA and a list of Microsoft Teams sender IP ranges taken from ID 12 of the Office 365 URLs and IP ranges list. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Enable protected voicemail in your organization', Exchange rules conditions list. Checked 2026-09-25.
[^32]: Protected (encrypted) voicemail messages cannot be opened in Microsoft Teams or Skype for Business. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Enable protected voicemail in your organization', paragraph 4. Checked 2026-09-25.
[^33]: The setup guide says users can listen to protected voicemail by opening it in Outlook, Outlook on the web, or Outlook for Android or iOS (disputed). Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Enable protected voicemail in your organization', paragraph 4. Checked 2026-09-25.
[^34]: Protected voicemail uses a Microsoft Purview sensitivity label applied by auto-labeling to encrypt voicemail and can block forwarding; it is supported for users with Exchange Online mailboxes. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Enable protected voicemail in your organization', paragraphs 2-3. Checked 2026-09-25.
[^35]: For several regional variants the transcription language table substitutes a base variant: for example en-GB, en-AU, en-CA and en-IN are transcribed as English (United States), and fr-CA as French (France). Source: [Teams languages for voicemail greetings and messages - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/languages-for-voicemail-greetings-and-messages), language table, 'Transcription available?' column, rows en-GB, en-AU, en-CA, en-IN, fr-CA. Checked 2026-09-25.
[^36]: The troubleshooting article says voicemail protected by Rights Management Services is viewable in Outlook but can be played only in Outlook on the web (OWA), with transcriptions readable in Outlook or OWA (disputed). Source: [Voicemail Messages Aren't Delivered in Teams or Skype for Business Client](https://learn.microsoft.com/en-us/troubleshoot/microsoftteams/phone-system/voicemails-not-delivered), section 'Resolution For Symptom 2' > 'Exchange Email Connector', Note bullet 2. Checked 2026-09-25.
[^37]: Admins can validate a user's voicemail configuration with the Voicemail self-help diagnostic, opened from Teams admin center Dashboard > Self-help diagnostics and run against the user's email address. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Diagnosing issues with Voicemail'. Checked 2026-09-25.
[^38]: Cloud Voicemail messages are sent from noreply@skype.voicemail.microsoft.com, and mail rules that block this address stop users receiving voicemail. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Cloud Voicemail processing', Important callout; section 'Cloud Voicemail delivery' paragraph 2. Checked 2026-09-25.
[^39]: Disabling voicemail through a Teams calling policy might also disable voicemail for Skype for Business users. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), top-of-page Warning callout. Checked 2026-09-25.
[^40]: For Auto Attendant calls sent to Shared Voicemail, admins can enable or suppress a system greeting, but custom greetings are not yet available; Call Queues support custom Shared Voicemail greetings for overflow, timeout and no-agents. Source: [Manage Shared Voicemail - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-shared-voicemail), section 'Configure Shared Voicemail' > 'Auto Attendants' and 'Call Queues'. Checked 2026-09-25.
[^41]: Shared Voicemail for Auto Attendants and Call Queues can target a Microsoft 365 group, a distribution list or a mail-enabled security group; users receive Shared Voicemail only through Auto Attendant or Call Queue redirection. Source: [Manage Shared Voicemail - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-shared-voicemail), introduction, paragraphs 2 and 4; section 'Prerequisites'. Checked 2026-09-25.
[^42]: Microsoft recommends a separate Shared Voicemail group for each Call Queue or Auto Attendant, because every member of a shared group can manage all voicemail sent to it. Source: [Manage Shared Voicemail - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-shared-voicemail), section 'Configure Shared Voicemail', paragraph 3. Checked 2026-09-25.
[^43]: Shared Voicemail appears in the regular Teams client only for a Microsoft 365 group connected to a Call Queue through the group's channel; distribution lists and mail-enabled security groups are not visible in Teams, though all three types are visible in the Queues app and Outlook. Source: [Manage Shared Voicemail - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-shared-voicemail), comparison table and footnote 1; section 'Location of Shared Voicemails' > 'Microsoft Teams'. Checked 2026-09-25.
[^44]: The Set-CsOnlineVoicemailPolicy reference says the ShareData parameter (values Defer and Deny) is deprecated, has no effect, and is ignored by the service (disputed). Source: [Set-CsOnlineVoicemailPolicy (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailpolicy), parameter -ShareData, Important callout. Checked 2026-09-25.
[^45]: The voicemail policies page says that when the policy's 'share data for service improvement' setting is false, voicemail data isn't shared regardless of user choice (disputed). Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), section 'Voicemail policy settings', 'Users can share data for service improvement'. Checked 2026-09-25.
[^46]: Cloud Voicemail delivers messages to Exchange over SMTP, and messages with a recorded duration under one second are not delivered. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Cloud Voicemail delivery', paragraph 1. Checked 2026-09-25.
[^47]: The documented workaround for undelivered voicemail is to add the Teams cloud service IP addresses to an SPF record, or create a transport rule that bypasses spam filtering for Cloud Voicemail from those addresses. Source: [Voicemail Messages Aren't Delivered in Teams or Skype for Business Client](https://learn.microsoft.com/en-us/troubleshoot/microsoftteams/phone-system/voicemails-not-delivered), section 'Workaround for Symptom 1'. Checked 2026-09-25.
[^48]: Cloud Voicemail messages are delivered to and stored in the user's Exchange mailbox (Exchange Online or Exchange Server); there is no separate voicemail store, and clients such as Outlook and Teams read voicemail through the mailbox. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Cloud Voicemail storage', paragraph 1. Checked 2026-09-25.
[^49]: In the Teams admin center calling policy, 'Voicemail for inbound calls' can be On, Off or Let users decide, and Let users decide is the default. Source: [Set up Cloud Voicemail](https://learn.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail), section 'Control routing of calls to Cloud Voicemail' > 'Using Teams admin center', step 3. Checked 2026-09-25.
[^50]: Managing voicemail policies in the Teams admin center is not currently available in GCC High and DoD environments. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), section 'Use Teams admin center', Note. Checked 2026-09-25.
[^51]: Voicemail transcription language support follows the Azure Speech Fast Transcription multilingual model, and Microsoft warns that the Teams language table may lag behind that service. Source: [Teams languages for voicemail greetings and messages - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/languages-for-voicemail-greetings-and-messages), introduction, paragraph 3. Checked 2026-09-25.
[^52]: Voicemail transcription is performed in the language detected in the recorded message, not the recipient's configured language. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), section 'Voicemail policy settings', 'Voicemail transcription'. Checked 2026-09-25.
[^53]: When transcription is turned off, the voicemail email tells the user the audio quality wasn't good enough for transcription. Source: [Manage Voicemail Policies - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-policies), section 'Voicemail policy settings', closing Note. Checked 2026-09-25.
[^54]: TransferTarget is used when CallAnswerRule is PromptOnlyWithTransfer or VoicemailWithTransferOption; it should be the SIP URI of another user in the organization, and a telephone number is accepted only for Enterprise Voice-enabled users. Source: [Set-CsOnlineVoicemailUserSettings (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailusersettings), parameter -TransferTarget. Checked 2026-09-25.
[^55]: When transcription translation is enabled, Cloud Voicemail translates from the detected language into the recipient's preferred language, falling back to the tenant default language. Source: [Change the default language for greetings and emails - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/change-the-default-language-for-greetings-and-emails), section 'Transcription translation'. Checked 2026-09-25.
[^56]: The EnableVoicemailTriage voicemail policy parameter defaults to False and only works for tenants in the Voice Applications private preview; Microsoft states general availability has not been determined. Source: [Set-CsOnlineVoicemailPolicy (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailpolicy), Description, Important callout; parameter -EnableVoicemailTriage. Checked 2026-09-25.
[^57]: A text-to-speech default greeting (DefaultGreetingPromptOverwrite) plays only when the user has no recorded custom greeting; the same rule applies to the out-of-office overwrite. Source: [Set-CsOnlineVoicemailUserSettings (MicrosoftTeams)](https://learn.microsoft.com/en-us/powershell/module/teams/set-csonlinevoicemailusersettings), parameters -DefaultGreetingPromptOverwrite and -DefaultOofGreetingPromptOverwrite. Checked 2026-09-25.
[^58]: End users configure their own voicemail settings in the Teams client under Settings > Calls > Manage Voicemail. Source: [Manage Cloud Voicemail settings - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-settings), introduction, final paragraph. Checked 2026-09-25.
[^59]: Default per-user Cloud Voicemail settings are: voicemail enabled, call answering rule Regular Voicemail, out-of-office greeting not enabled, no transfer target, and no default greeting overwrite. Source: [Manage Cloud Voicemail settings - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/manage-voicemail-settings), introduction, 'The default settings for Cloud Voicemail are' list. Checked 2026-09-25.