Display Original Dialed Number
When CallManager translates a number, the Dialed number displayed on the user's phone is translated according to rules on the translation pattern. By setting the Always Display Original Dialed Number parameter to True (in Service Parameters > CallManager > Device - General), the number displayed to the end user will always be the number dialed.
One particular application of this function is Manager/Assistant scenarios. Consider the scenario where the Assistant shares a line with the Manager, and the Manager has a private line on which to receive transferred calls. In this situation, if the Assistant fields a call for the manager and transfers the call to the Manager's private line, normally the private line would be visible to the Calling Party - the private line, is therefore, no longer private! With the Always Display Original Dialed Number parameter set to true, the original calling party only ever sees the original number.
One unusual caveat of this feature is that in an ad hoc conference, the initiator will have the original party called display, and not Conference - other participants will have conference in the display, and ConfList works as expected.