What is Automated ANI / Caller ID spoofing?
Automated ANI / Caller ID spoofing is setting the number you are calling from without the use of an operator / company PBX system. By far the easiest method thanks to the increasing take-up of internet telephony services are VoIP (Voice over Internet Protocol) service providers who allow you when using their service to set whatever caller ID you like (which is also used as ANI).