Technology works wonders at all times. Since time immemorial man has initially developed a technological wonder to have positive impact on the lives of all, but within days you will see new device invented to counteract the impact of the device invented earlier. Though, it depends entirely on mankind to adopt the positive side or negative side of a technological wonder. GPS jammer and wireless camera hunter are two such devices that are having equal use for both the directions.
Voice over Internet Protocol (VoIP) is a phone service which transfers your voice to the listener through the Internet. Voice is carried from the sender to the receiver through IP packets using specialized hardware. The VoIP phone service can be availed by using an Analog Terminal Adapter (ATA). The underlying principle is simple. VoIP works by digitalizing the voice and sending it in packets to the destinations where the digitalized voice is reconverted to the normal voice.