Registering the Phone
Generally, your phone will be deployed with multiple other phones. In this case, your system administrator will configure the phone parameters beforehand, so that after you set up your phone, the phone will be registered and ready to use.
If your phone is not part of a large phone deployment, your phone may not be registered after you set it up. Before you use your phone, you or your system administrator will have to register it.
Web Info: How to Register Your Phone
For detailed information on how to register your phone after you install it, seeRegistering Standalone Polycom Phones(Quick Tip 44011).