Mitel 5000 series:

  1. Press the blue Menu button
  2. Press Settings
  3. Press Programmable Keys
  4. Press the Key you wish to edit.
  5. Press Edit InfoPress Backspace to clear/correct the name; press Edit Number to edit the programmed number.
  6. Press OK.
  7. Press Save.
  8. Press Close until you are out of the system. 

Mitel 6940 IP:

  1. Press and hold the Speed Call for 4 seconds.
  2. Edit the speed call number or name.
  3. Press Save.