sum quarter

I have 3 columns; Date/Calls/Distributions. The information is entered only on dates where a call or distribution has happened. In a table on a different sheet, the quarterly totals are entered. I'm trying to write a formula that can be applied to the column in the totals table that sums up the calls/distributions automatically. I only enter a new line on the table at the end of a qtr, so no need for a mtd.