Extension won't register to the UCM
Fix phones that can't connect.
| What you need | Affects |
|---|---|
| Admin access to the UCM web portal, and the phone's settings | That extension |
1. Check the phone
- PasswordRe-enter the extension's SIP password.
- ServerCheck it points to the UCM's IP address and port.
2. Check the UCM
- SecurityCheck whether the phone's IP was blocked by security protection, and unblock it.
- RestartRestart the phone.
Troubleshooting
| Problem | Likely cause and fix |
|---|---|
| Blocked again | A device is retrying with a wrong password. Fix it. |