Call Lists - Snom 220 Manual

Call Register
After choosing a file, a preview of the selected file contents will be
shown.
Now assign the three possible data types (name, number, contact type),
which can be imported, to the columns in the preview that are indeed
representing those kinds of data.
Once satisfied with the preview, pressing "Save" will save the file
contents to the phone book, which could look like:
These new entries will become part of the existing phonebook. They will
be stored on the flash and can be retrieved anytime until they are
deleted or a factory reset is performed.

Call Lists

The snom 220 maintains lists of missed, received, and dialed calls that
can be accessed by pressing the call list key
For example, after choosing the missed calls, the most recent missed
call is displayed first.
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from the idle state.