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Câu 26: MS-721: Collaboration Communications Systems Engineer

You have a Teams Phone deployment that uses Direct Routing on a single Session Border Controller (SBC). Users report that outbound PSTN calls are failing, but inbound PSTN calls are successful. When you review the SBC logs, you discover that Microsoft is responding to SIP option requests, but is NOT sending SIP option…

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You have a Teams Phone deployment that uses Direct Routing on a single Session Border Controller (SBC). Users report that outbound PSTN calls are failing, but inbound PSTN calls are successful. When you review the SBC logs, you discover that Microsoft is responding to SIP option requests, but is NOT sending SIP option requests. What is the cause of the issue?

Các lựa chọn

Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.

  1. A. The online PSTN gateway is disabled.
  2. B. An SBC certificate is expired.
  3. C. An external DNS entry is missing from the FQDN of the SBC. — đáp án hiện tại
  4. D. The phone numbers of the users are defined by running the New-csTeamsUnassignedNumberTreatment cmdlet.

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