What does 'Invalid ID (1)' mean on my Nortel IP Phone and how can I fix it?
- MMark SandersSep 6, 2025
If your Nortel IP Phone displays 'Invalid ID (1)', it indicates that an incorrect user ID was entered. Ensure you enter the correct user ID. If the problem persists, notify your system administrator, as the user ID might not be in the Gatekeeper database.