In the same "Black List" software,there is a provision called white list whereby you can choose phone number(s)for allowing calls,For all other numbers it will be like 'busy response'.
NIce software !
Sorry guys I didn't find specific software. Although I tried KillerMobile BlackList, Handy Blacklist, Best Blacklist. These software doesn't have capabilities that I want, bcoz they send red key. I mean I wanna keep my mobile busy with another call, but I think there is no such software.
Please lock dis thread.