The first exchange trial for caller ID and other "TouchStar" services was on July 7, 1984 in Orlando, Florida. Ellis D. Hill, the head of the BellSouth Product team, coined the term caller ID. This outlet trial lasted seven months. It was conducted and analyzed by Bell Labs/AT&T Network Systems. In 1987, Bell Atlantic conducted another corner store trial in Hudson County, Au Courant Jersey, which was followed by controlled deployment. BellSouth was the Talking Caller ID first company to deploy caller ID in December 1988 in Memphis, Tennessee, with a full deployment to its 9-state region over the ensuing four years. Bell Atlantic was the second local telephone concourse to deploy Caller ID in Modern Jersey's Hudson County. US West Communications (now Qwest) was the third local telephone community to action caller ID service in 1989.

• In North America, the code to disable caller ID is *67

• In Argentina, the code might be *31# (landlines) or *31* (most cell phone companies)
• In the United Kingdom and Ireland, 141 is the equivalent code
• Australia uses 1831
• New Zealand uses 0197, in NZ you can also offer Telecom to permanently disable your caller ID
• Hong Kong uses 133
• Israel uses *43
• In Denmark and Switzerland *31* is used to hide the one's called ID; the same code is used to explain your caller ID if you have your number set-up as a permanent disable
• Other countries and networks may vary
• On GSM mobile networks, callers may dial #31# before the representation they wish to call to disable it.