
Chapter 3 Installing IP telephones 45
IP Telephony Configuration Guide
Deregistering DNs for IP telephones
You can deregister selected telephones from the Business Communications Manager, and force
the telephone to go through the registration process again.
To deregister a DN for a telephone:
1 In the Unified Manager, open Services, IP Telephony, and click on Nortel IP Terminals.
The IP Terminal summary appears.
2 Click on the IP Terminal Status tab.
3 Select the IP Terminal with the DN you want to deregister.
4 Open the Configuration menu, or right-click anywhere on the listing for the terminal to bring
up the menu. Refer to Figure 9.
Figure 9 Deregister DN from Configuration menu
5 Click Deregister DN.
6 Reregister the telephone, as described in “Configuring the i2002 or i2004 telephone to the
system” on page 35.
Warning: Once this feature is activated, all active calls are dropped.
Warning: Once this feature is activated, all active calls are dropped.
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