Distinct count with phone numbers in Table

[Dgrooves]

So I'm new to DAX and I know this is pretty basic. I'm just trying to create a measure based on how many of the same numbers called during a period of time. On a separate visual show the top 10 using TOPN

My formula: 

Call Count Measure := DISTINCTCOUNT('Full Call Sheet'[Calling Party Number])

All I'm getting back is just the total of calls instead of a table with Phone number and the number of times they're called.  Any help would be greatly appreciated. 

[ryan_mayu]

@Dgrooves 

could you pls provide the sample data ? do you have a date table and filter the datetime?

[Dgrooves]

I don't have a table I can share, Its just a basic table with date, customer number, duration.  If that helps. I appreciate your help

[ryan_mayu]

you can provide some dummy data. Otherwise, it's difficult to provide you the proper solution.

[Dgrooves]

Thanks for the help

[ryan_mayu]

what's the expected output?

[Dgrooves]

Just to show count by individual phone number and duration for each

[ryan_mayu]

what do you mean by count duration for each? could you pls provide the output screenshot based on the sample data you provided?