If I understand correctly, you can pipe your output to: `awk '{a=$1} {if (a > 3) print a}''. `a' is awk variable. `$1' is first column of awk input so you probably need to change it.
Thank you for your message . Yes , you are right . I really need to filter
out that CallId with number of occurances say less than three. But your command is not getting through on my centos . Please correct me.