Good day @David Clarke
Welcome to Q&A forum!
To help us understand your situation better, could you please confirm the following questions:
- What kind of phone are you using? (For example: Yealink, Poly, AudioCodes, etc.) There are a few brands and models that Microsoft certifies to work with Teams: Certified Teams Phone
- Is the phone signed in with a personal user account or a shared/common area account? (A common area phone is typically placed in an area like a lobby, reception area, or a conference room and is available to many people to make a call)
- Have there been any recent changes to Teams settings, licenses, or policies in your organization? (For example: updates to Teams Phone settings, user permissions, or device policies.)
Besides, to confirm that we are on the same page, I want to suggest some possible troubleshooting steps for you. Please take a look to see if it works:
Step 1: Check Line Key Configuration in Teams Admin Center
- Go to Teams Admin Center → Teams Devices → Phones.
- Select the affected phone.
- Under Configuration, check the Line keys settings.
- Try re-adding the quick dial users here.
If the users are searchable but not addable, it could be a policy or sync issue.
I have found a related article for you: Configuring Line Keys from Teams Admin Center (TAC)
Step 2: Verify User Licenses
You also need to make sure the users you're trying to add have:
- A valid "Microsoft Teams Phone license".
- Are enabled for "Enterprise Voice".
You need to ask your IT Admin to check this in Microsoft 365 Admin Center under the user’s profile.
- Go to Microsoft 365 Admin Center (You’ll need admin permissions to access this.)
- Search for the users
- Check their licenses
- Click on the user’s name.
- Go to the "Licenses and Apps" tab.
- Make sure "Microsoft Teams Phone Standard" or "Teams Phone with Calling Plan" is checked.
- Check if Enterprise Voice is enabled
- Still in the user’s profile, go to "Account"→ "Manage user settings".
- Look for a setting called "Enterprise Voice" or "Voice Routing Policy".
- If you don’t see it, this might need to be enabled by your IT admin
Set up Teams phone in your organization
Step 3: Restart and Re-sync the Phones
- Restart the affected devices.
- On the phone, go to Settings → Admin Settings → Resync or Factory Reset (Iphone)
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