Verizon restricted call back

Hello,
Recently my cousin showed me a program that he installed on his verizon mobile phone. When you call his phone under *67 all he has to do is not answer it then after it says missed call he will recieve the call again but this time with the actual number that is calling. Does anyone know what this program is? i really need to know

trapcall.... u don't download anything and its free....loook it up on google

"Ok there are two things ytou can do. if u are verizon get do not disturb.... its 2.99 monthly or 16 something unlimited. but its pretty nice. you can block specific numbers, toll free/unknown numbers, private numbers (ppl who dial *67), and block calls during certain hours. It blocks these calls for you and keeps a record of them for you.

Also for those pesky people who call restricted to prank you or what not, get trapcall. the basic plan is free...it allows you to show blocked numbers. its not spam it works and doesn't ask for any credit card numbers. what it does is the call comes through as restricted. press ignore...the call will go through their system and a couple seconds later you'll get a call back from the same person but the number will show. the person will never know. (tip: if you have a ringback tone the ring back tone will play until it gets put thru the system at which time it will switch to just ringing.) its a nice free way to get the numbers of those prankers or people who are harassing you. There are other plans that have more options but they cost "