EXHIBIT 11 ACTIVE VOICE CORPORATION COMPUTATION OF EARNINGS PER SHARE (IN THOUSANDS, EXCEPT SHARES AND PER SHARE AMOUNTS) Three months ended Six months ended September 30, September 30, ----------------------- ------------------------ 1997 1996 1997 1996 --------- --------- --------- --------- PRIMARY Average shares outstanding 4,621,423 4,575,438 4,615,625 4,569,085 Net effect of dilutive stock options based on the treasury stock method using average market price 60,824 44,516 44,412 54,949 --------- --------- --------- --------- Total 4,682,247 4,619,954 4,660,037 4,624,034 --------- --------- --------- --------- --------- --------- --------- --------- Net income $411 $912 $866 $1,683 --------- --------- --------- --------- --------- --------- --------- --------- Per share amount $0.09 $0.20 $0.19 $0.36 --------- --------- --------- --------- --------- --------- --------- --------- FULLY DILUTED Average shares outstanding 4,621,423 4,575,438 4,615,625 4,569,085 Net effect of dilutive stock options based on the treasury stock method using the period end market price, if higher than average market price 78,293 44,519 53,576 54,974 --------- --------- --------- --------- Total 4,699,716 4,619,957 4,669,201 4,624,059 --------- --------- --------- --------- --------- --------- --------- --------- Net income $411 $912 $866 $1,683 --------- --------- --------- --------- --------- --------- --------- --------- Per share amount $0.09 $0.20 $0.19 $0.36 --------- --------- --------- --------- --------- --------- --------- ---------