What is *77 ?

I knew about the red light on cars, but not the *77 
It was about 1:00 p.m. In the afternoon, and Lauren was driving to visit a friend. An UNMARKED police car pulled up behind her and put his ligh ts on. Lauren's parents have always told her never to pull over for an unmarked car on the side of the road, but rather to wait until they get to a gas station, etc. 

Lauren had actually listened to her parents advice, and promptly called*77 on her cell phone to tell the police dispatcher that she would not pull over right away. She proceeded to tell the dispatcher that there was an unmarked police car with a flashing red light on his rooftop behind her. The dispatcher checked to see if there were police cars where she was and there weren't, and he told her to keep driving, remain calm and that he had back up already on the way. 
 Minutes later 4 cop cars surrounded her and the unmarked car behind her. One policeman went to her side and the others surround ed the car behind.. They pulled the guy from the car and tackled him to the ground. The man was a convicted rapist and wanted for other crimes. 
I never knew about the *77 Cell PhoneFeature, but especially for a woman alone in a car, you should not pull over for an unmarked car. Apparently police have to respect your right to keep going to a safe place. 
*Speaking to a service representative at ** Bell ** Mobility confirmed that *77 was a direct link t o State trooper info.So, now it's your turn to let your friends know about*77. 
Send this to every woman (and person) you know; it may save a life. 
This applies to ALL 50 states.