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MS-721 · Question #65

You have a Microsoft Teams Phone deployment. The 613 7010 5XXX phone number range is allocated to the Session Border Controller (SBC). A user named User1 is configured as shown in the following exhibi

The correct answer is B. Set-CsOnlineVoiceUser [email protected] -TelephoneNumber $null C. Set-CsUser [email protected] -OnPremLineURI "tel:+61370105555". User1 has a conflicting Calling Plans number blocking inbound Direct Routing calls, and no LineURI set, which prevents caller ID on outbound calls - both must be corrected.

Configure and manage Microsoft Teams Phone

Question

You have a Microsoft Teams Phone deployment. The 613 7010 5XXX phone number range is allocated to the Session Border Controller (SBC). A user named User1 is configured as shown in the following exhibit. User1 reports that when an external caller attempts to call the phone number of User1, the external caller receives an error message. User1 can make outbound calls, but no caller ID appears. Which two commands should you run to resolve the issues? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

Exhibit

MS-721 question #65 exhibit

Options

How the community answered

(31 responses)
  • A
    13% (4)
  • B
    77% (24)
  • D
    3% (1)
  • E
    6% (2)

Why each option

User1 has a conflicting Calling Plans number blocking inbound Direct Routing calls, and no LineURI set, which prevents caller ID on outbound calls - both must be corrected.

AGrant-CsOnlineVoiceRoutingPolicy -Identity [email protected] -PolicyName $null

Removing the voice routing policy would strip outbound PSTN routing from the user entirely and does not resolve either the inbound failure or the missing caller ID.

BSet-CsOnlineVoiceUser [email protected] -TelephoneNumber $nullCorrect

Set-CsOnlineVoiceUser with -TelephoneNumber $null clears any Microsoft 365 Calling Plans number assigned to the user; this number conflicts with Direct Routing inbound routing through the SBC and causes external callers to receive an error when dialing.

CSet-CsUser [email protected] -OnPremLineURI "tel:+61370105555"Correct

Set-CsUser with -OnPremLineURI assigns the correct E.164 telephone number to the user for Direct Routing, enabling the SBC to match the inbound DID and populating the caller ID that is sent on outbound calls.

DSet-CsUser [email protected] -EnterpriseVoiceEnabled $false

Setting EnterpriseVoiceEnabled to false disables all voice functionality for the user, which would prevent outbound calls and make the situation worse.

ESet-CsOnlineVoiceUser [email protected] -TelephoneNumber "+61370105555"

Set-CsOnlineVoiceUser -TelephoneNumber assigns a Calling Plans number from the Microsoft pool, which would continue to conflict with the Direct Routing SBC and does not set the OnPremLineURI needed for proper routing.

Concept tested: Teams Direct Routing user phone number conflict resolution

Source: https://learn.microsoft.com/en-us/microsoftteams/direct-routing-configure

Topics

#Teams Direct Routing#PowerShell#Voice User Configuration#Calling Troubleshooting

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