Shoot-'em-up definition, a motion-picture or television program that emphasizes gunplay, action, and often violence. See more.
What is VoIP: Useful Terms. VoIP refers to a way to carry phone calls over an IP data network, whether on the Internet or your own internal network. A primary attraction of VoIP is its ability to help reduce expenses because telephone calls travel over the data network rather than the phone company's network.
Caller ID spoofing works in a few ways, the most popular being through VoIP (Voice-over-Internet-Protocol) technology. VoIP is the technology that allows for voice communications to be sent over an Internet connection rather than through a phone line or cell tower.