Avaya 5420 - Manual (Page 10)

2420 and 5420 User Guide
2420 and 5420 User Guide Page 6
IP Office 4.0 15-601077 Issue 8 (11th December 2006)
No User
The NoUser configuration will be used for extensions where the home user is not currently logged on for
example:

The home user is logged on to another extension

Forced login is enabled
An extension set as NoUser will display the name "NoUser" and the extension number.
If required, and you have been allocated a login code, you can logon using your extension number and
login code. (see Logging On)
Note

Although internal calls may be made from an extension marked NoUser, normally calls cannot be
received on that extension.