# Unable to Add Phone After Deletion

Symptom: After you delete a phone (for example, extension 1000) from a user, you are unable to add the phone back into the system using the same extension number.

Cause: The phone extension is currently programmed as a member in the Personal Ring Group of another user (for example, extension 1001).

Corrective Action: Delete the phone (extension 1000) from the MiCollab Client Accounts tab of the other user (extension 1001)

1. Under Applications, click MiCollab Client Service.

2. Click Configure MiCollab Client Service.

3. Click Accounts.

4. Click the account of the user with the PRG (extension 1001).

5. Under Phone Numbers delete the phone (extension 1000).

6. You can now add the phone extension 1000 back into the system through USP. Note that on the next MiCollab Client PBX sync, the phone (extension 1000) will be added back into the PRG of the other user (extension 1001).

Parent topic: Troubleshoot