Avaya one-X H.323 Installation And Maintenance Manual page 27

The user has only one call appearance, and hence, cannot transfer or conference calls.
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The user has no administered feature buttons, and cannot invoke on-hook dialing.
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Extension-based information, like a given user's Contacts data or Option settings are not
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available.
The user is limited to the calling capability administered for PSA (Personal Station Access)
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on the call server, for example, access to an emergency number.
The telephone cannot receive any outside calls.
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Unless otherwise disabled, the telephone automatically attempts to register unnamed if no
action is taken on the telephone Extension entry screen within 60 seconds. Initiating any ID or
password entry disables and prevents unnamed registration from occurring. Unnamed
registration is ignored after any dialpad entry.
Administrators can disable unnamed registration by appropriately administering the system
parameter UNNAMEDSTAT, as indicated in Chapter 7 of the Avaya one-X™ Deskphone H.323
Administrator Guide. Unnamed registration appears to the end user like Avaya Communication
Manager TTI Mode, and is similar from an administration perspective. For more information
about TTI, see your Avaya Communication Manager documentation.
Unnamed Registration
Issue 1 August 2010 27