Free mobile tricks

Hai friends!
This is good time to use this tech..
wanna know different Free MISS CALL alert
simply use this......
For BSNL
*62*9117010#
For AIRTEL
*62*91565#
For AIRCEL
*62*984220100#
For DOCOMO
*62*919029955003#
For RIM
*62*919015000700#

Use this and Enjoy........