2N Omega series - VoIP manual v1.4 - Manual (Page 101)

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This menu helps you normalise received/called numbers to/from the current
applications (PBX Assistant, TAPI driver, etc.). Remember to set this parameter to
prevent dialling unsupported local and international calls to some outgoing
connection types (ISDN, e.g.).
Set the following:

From
– original number format before normalising.

To
– resultant number format after normalising (% is always the first character
in the format).
6.1.5.3. Called Number Assigning
This parameter helps you see the called party identification in the application
(PBX Assistant). This function is suitable for reception desks that are shared by
multiple PBX users.
Set the following:

From – DISA or DDI for ISDN connections.

To
– name to be displayed in the application.