What is Caller ID?
'''Caller identification''' (Caller ID) is a [[telephone]] service. It is available in analog and digital telephone systems. That includes [[voice over IP]] (voIP). The information received from the service is shown on a telephone display screen. ==Type II caller ID== In early 1995, Bellcore released another type of [[modulation]], similar to Bell 202. It became possible to send caller ID information while a user was already on the telephone. This service became '''call waiting ID'''. [[Smartphone]]s use third-party [[mobile app]]s to do name look ups. [[Category:Telecommunications]] {{tech-stub}}