Thenewguy,
Caller-ID is pretty simple to get working on the MiVO-250 so I am not sure exactly what your issue is, but here is what needs to be set for flags on the phones.
Expanded CO Call Information On Displays - Enabled by Default
Outside Party Call Information has Priority - Enabled by Default
The other flags you are referring to only work if the two above are enabled.
Display Only CID on Ringing is a relatively new flag that removes the transfer information and replaces it with the originating Caller-ID information and is disabled by default.
Display Outside Party Name is not a new flag, but it allows you to toggle between seeing the Name or Number on the phone along with the call timer on the second line and is enabled by default.
Now, another new System Flag is Display Caller ID Name and Number, Default-No, which removes the Call Timer from the display and allows you to see both Name and Number while you are talking on the phone.
Hopefully that solves your problem, but keep in mind none of these really designed to work with Single Line phones.
Thanks,
TE