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Giri-0764 asked SharonZhao-MSFT commented

Microsoft Teams Call drop issue

Hi,
When we call the users from Teams the call drops immediately. How to resolve the issue?

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Giri-0764 avatar image
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Giri-0764 answered SharonZhao-MSFT commented

@SharonZhao-MSFT : We switched the network then its working fine.

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@Giri-0764
I'm glad to hear that.
I converted your comment as answer. Please be free to mark it as an answer for helping more people.

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SharonZhao-MSFT answered SharonZhao-MSFT converted comment to answer

@Giri-0764,

Except for the error message you provided, could you share the content after clicking More information button?

According to the error message, this problem is related to your network.

Please contact your IT admin to check if the following ports and IP addresses are opened:

Ports: UDP ports 3478 through 3481

IP addresses: 13.107.64.0/18, 52.112.0.0/14, and 52.120.0.0/14

Meanwhile, the network admin could use Network Assessment Tool to test network’s performance and connectivity.

If all the settings are no problem, a network optimization is needed. For more information, please refer to this article.


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Hi Sharon,

When I click more info it redirects to the link: https://docs.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?redirectSourcePath=%252farticle%252fOffice-365-URLs-and-IP-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2&view=o365-worldwide#skype-for-business-online-and-microsoft-teams

I checked with another network also, the same issue. In our office network, it's working. It's happening in both windows and Ubuntu.

How to resolve the issue?

Best Regards,
Giri.

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@Giri-0764

Do you mean that user is able to call only in your office network?

It should be related to your network.

The link also indicates that you should check if your network meet the requirements.

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@SharonZhao-MSFT: Yes, he is able to call from our office and mobile hotspot network. He is not able to call from the home broadband network.

Please suggest resolving the issue.

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