Does Microsoft no longer allow tenants to change the default conference bridge number?

Question

Does Microsoft no longer allow tenants to change the default conference bridge number?

TSOAdmin 416

We are unable to identify where the options are for changing the default telephone number of the tenant Teams service's conference bridge:

Selecting any of the toll numbers listed at Teams Admin Center > Meetings > Conference Bridge does not cause a "Set as default" option to appear in the list's toolbar as stated in Microsoft Learn article, Step 2 - Change the default phone number of your conference bridge (optional).

Has this functionality been moved or does Microsoft no longer allow tenants to change their default conference bridge telephone number?

2 answers

Your answer

Answer 1

Dear @TSOAdmin,

Welcome to the Q&A Community.

Thank you for sharing your concerns. Based on your description, I'd like to offer the following insights and recommendations to help address the issue.

First, please ensure you're signed in with a role that has permission to manage conferencing settings, typically a Teams Administrator or Global Administrator.

In the Teams Admin Center, navigate to: Meetings > Conference Bridges, then select Bridge settings at the top. Review the list of assigned numbers and their classifications.

Important:

Only service toll numbers can be set as the default. Toll-free numbers are not eligible.
Dedicated numbers (specific to your organization) can be fully managed, while shared numbers may have limited configuration options.
Microsoft may automatically assign a default number based on your organization's country or region.

If the Teams Admin Center doesn’t offer the option you need, you can try using PowerShell for advanced configuration:

Set-CsOnlineDialInConferencingTenantSettings -DefaultServiceNumber "<Phone Number>"

You can try this workaround and update us. If the issue still appears please feel free to let us know and we will keep assisting you. Please know that we truly appreciate your patience and understanding as we strive to support you. We are here to help. Thank you very much for your understanding and cooperation.

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Ruby-N 1,750 Reputation points Microsoft External Staff Moderator

2025-08-05T22:59:00.2+00:00

Good day @TSOAdmin,

Hope things are running smoothly on your end.

Following up on the support thread we've been working on. I hope the information I shared in my previous answer resolve the issue you were facing. If you are still facing the same issue or need assistance with anything else, kindly respond to this email, and I will be happy to help.

We want to make sure everything is working as expected and that your experience remains uninterrupted.

Thank you for your patience and understanding throughout the troubleshooting process.

I look forward to hearing from you soon.

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Answer 2

Ruby-N 1,750 Microsoft External Staff Moderator

Dear @TSOAdmin,

I hope you're doing well.

I'm following up on the issue you previously reported. Have there been any updates on your end? Additionally, were you able to try the workarounds I shared in my last response?

If the issue persists, I sincerely apologize for the inconvenience. At this point, the best next step would be to contact Microsoft Support directly. Their engineers can run remote diagnostics, check backend configurations, and apply the necessary tools to resolve the issue.

As forum moderators, we don’t have access to backend systems due to privacy and security limitations, so contacting support is the most effective solution.

We sincerely recommend you try to create a support ticket from Microsoft 365 Admin Center>Support>Help & Support.

You can raise support ticket from: Microsoft 365 admin center 

For reference: Get support - Microsoft 365 admin | Microsoft Learn

Phone Support: Microsoft provides customer service phone numbers based on your region. You can find the appropriate contact number here: Customer service phone numbers - Microsoft Support

I’m committed to supporting you in any way I can throughout the process. Once you have successfully created a support ticket, feel free to share the ticket tracking ID with me in Private Message. I’ll help monitor its progress and ensure the issue is addressed appropriately and in a timely manner.

To view or send private messages, sign in to the Q&A forum using the account that posted this thread, then click Private Messages. User's image

Looking forward to your response so I can assist you more effectively. Thank you very much for your understanding and your cooperation.

Ruby-N 1,750 Reputation points Microsoft External Staff Moderator

2025-08-18T17:59:29.4933333+00:00

Good day @TSOAdmin,

Hope things are running smoothly on your end.

Following the instructions I shared earlier on how to contact Microsoft Support, may I ask if you’ve been able to get in touch with them? If yes, please feel free to let us know. Thank you for your patience and understanding throughout the troubleshooting process.

I look forward to hearing from you soon.
TSOAdmin 416 Reputation points

2025-08-26T14:23:49.4066667+00:00

Hello Ruby - thank you for your response. As noted previously, the "Set as default" option no longer appears when selecting any of the toll numbers listed on the Conference Bridges page in the Teams Admin Center. This is shown in the image below, where another toll number has been selected but the Set as default option does not appear. All numbers listed there are those numbers made available by Microsoft. More numbers are listed (70 in all) but the image shows only the top few. This failure of the UI contradicts the experience presented in Step 2 of Microsoft Learn article, Change the phone numbers on your Audio Conferencing bridge.

This is my experience at this page, when connecting to this page using an account that has the Teams Administrator role assigned to it. Admins should not be required to use PowerShell when the Conference Bridge page is specifically provided by Microsoft for changing the default conference telephone number.
Ruby-N 1,750 Reputation points Microsoft External Staff Moderator

2025-08-26T21:40:38.99+00:00

Dear @TSOAdmin,

Thank you for your detailed response and for sharing the context of the issue. Based on what you've described, I recommend reaching out directly to Microsoft Support for further assistance.

As forum moderators, we don’t have access to backend systems or diagnostic tools required to investigate this thoroughly due to privacy and security limitations. The most effective way forward is to submit a support ticket through the Microsoft 365 Admin Center.

1/ Log into admin.microsoft.com with your admin credentials. If you don't have admin permissions, you'll need to contact someone in your organization who does.

2/ Select the green help & support button typically located at the bottom right of the admin center dashboard. Click on it to open the support pane.

3/ Type in “I can't change the default conference bridge number in Teams admin” into the search bar.

4/ Select “Contact support”.

5/ Fill in your details and give a strong description of your problem for a quicker resolution. You can add a file, a screenshot, or a video for added support. Once you’ve filled out the details, select Contact me at the bottom.

After submitting a support ticket, you’re welcome to share the ticket number with us in Private Message if you’d like and this will help us track the progress more closely from our side as well. We are willing to be of assistance.

Looking forward to your response and wishing you a great day ahead.

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Does Microsoft no longer allow tenants to change the default conference bridge number?

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