Changing Phone Header Bar Display

To change the Phone Header Bar Display (top right hand corner of the phone):
CME (SCCP)
ephone-dn 1
   number 1234
   desc +442056781234

CME (SIP)
voice register pool 1  ! Not in voice register dn
   number 1 dn 1
   description +442056781234


CM
Change the DN External Phone Number Mask