[cisco-voip] In what cases does the dialed number change on the calling terminal?

[Simon, Bill]

Say I have DN 1234 forwarded to 5678.  If someone internally dials 1234, 
their display changes to the number they are forwarded to, 5678.

However if I dial my VM pilot, the pilot number stays on the screen 
instead of displaying the DN of the VM port I am connected to.

I'm looking for a comparison of which functions (call forwarding, 
translation pattern, hunt list, etc.) maintain the originally-dialed 
number on the caller's display, and which ones cause the display to change.


Thanks
Bill