nerdexam
Microsoft

MS-721 · Question #200

You have a branch office named Branch1 that contains a Survivable Branch Appliance (SBA) in Microsoft Teams. You have a Teams Phone deployment. A limited number of users in Branch1 report that when th

The correct answer is A. Assign an SBA policy to the users in Branch1.. Users can only use a Survivable Branch Appliance during an internet outage if they have been explicitly assigned an SBA policy; without it, they cannot register to the SBA.

Implement and configure Teams Phone

Question

You have a branch office named Branch1 that contains a Survivable Branch Appliance (SBA) in Microsoft Teams. You have a Teams Phone deployment. A limited number of users in Branch1 report that when the internet connection to the office fails, they cannot make calls by using Teams. You need to ensure that all the users in Branch1 can make calls in the event of an internet outage. What should you do?

Options

  • AAssign an SBA policy to the users in Branch1.
  • BReregister the SBA with Azure AD.
  • CReconfigure the PSTN trunk settings for the SBA.
  • DAssign a dial-out policy to the users in Branch1.

How the community answered

(20 responses)
  • A
    75% (15)
  • B
    15% (3)
  • C
    5% (1)
  • D
    5% (1)

Why each option

Users can only use a Survivable Branch Appliance during an internet outage if they have been explicitly assigned an SBA policy; without it, they cannot register to the SBA.

AAssign an SBA policy to the users in Branch1.Correct

An SBA policy maps users to one or more Survivable Branch Appliances, allowing their Teams client to fall back and register to the local SBA when the WAN connection to Microsoft 365 is unavailable. Users in Branch1 who are not covered by an SBA policy cannot register to the SBA and therefore cannot make PSTN calls during an outage.

BReregister the SBA with Azure AD.

Re-registering the SBA with Azure AD addresses an authentication or connectivity issue with the appliance itself and would not extend SBA coverage to users who lack an assigned SBA policy.

CReconfigure the PSTN trunk settings for the SBA.

PSTN trunk settings on the SBA control the SIP trunk to the carrier and are not the mechanism by which user devices discover or register to the SBA during an outage.

DAssign a dial-out policy to the users in Branch1.

A dial-out policy controls whether meeting participants can dial out to PSTN numbers from meetings and has no relation to SBA registration or branch office survivability.

Concept tested: Survivable Branch Appliance policy user assignment

Source: https://learn.microsoft.com/en-us/microsoftteams/direct-routing-survivable-branch-appliance

Topics

#Survivable Branch Appliance#SBA policies#Teams Phone#Outage resilience

Community Discussion

No community discussion yet for this question.

Sign up to join the discussion
Full MS-721 Practice