The Telephone Cases, 126 U.S. 1 (1888), were a series of U.S. court cases in the 1870s and the 1880s related to the invention of the telephone, which culminated...

device, such as a radio telephone or a mobile telephone, or to other devices for data transmission via the public switched telephone network (PSTN) or other...

too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are...

Telephone numbers in Asia have the most possible prefixes of any continent on Earth: 2, 3, 6, 7, 8, 9. Below is a list of country calling codes for various...

history of the telephone chronicles the development of the electrical telephone, and includes a brief overview of its predecessors. The first telephone patent...

starting with the digit "2", which mostly is used by countries in Africa. Telephone numbering plan National conventions for writing telephone numbers List...

Telephone numbers in the Netherlands are administered by the Ministry of Economic Affairs, Agriculture and Innovation of the Netherlands. The telephone...

plan, known as the National Telephone Numbering Plan, which is the system for assigning telephone numbers to subscriber stations. Telephone numbers are of...

Telephone numbers in India are administered under the National Numbering Plan of 2003 by the Department of Telecommunications of the Government of India...

telephone call or telephone conversation (or telcon), also known as a phone call or voice call (or simply a call), is a connection over a telephone network...

The following are country calling codes in Africa. Telephone numbering plan List of country calling codes List of international call prefixes Category:Telephone...

the company trying to unseat Bell's telephone patent. 1888: Telephone patent court cases are confirmed by the Supreme Court, see The Telephone Cases 1889:...

The Bell Telephone Company was the initial corporate entity from which the Bell System originated to build a continental conglomerate and monopoly in telecommunication...

cellphone) is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed...

The Australian telephone numbering plan governs the allocation of telephone numbers in Australia. It has changed many times, the most recent major reorganisation...

The public switched telephone network (PSTN) is the aggregate of the world's telephone networks that are operated by national, regional, or local telephony...

individuals and numerous companies. The concept of the telephone dates back to the string telephone or lover's telephone that has been known for centuries...

endpoints. Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering...

dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas...

The Bell System was a system of telecommunication companies, led by the Bell Telephone Company and later by the American Telephone and Telegraph Company...

telephone number in parts of Asia and in Jamaica. From May 2020, 119 was introduced in the United Kingdom as the single non-emergency number for the COVID-19...

Plain Old Telephone Service (POTS), or Plain Ordinary Telephone System, is a retronym for voice-grade telephone service employing analog signal transmission...

A telephone switchboard was a device used to connect circuits of telephones to establish telephone calls between users or other switchboards, throughout...

all telephone switching systems which redirects a telephone call to another destination, which may be, for example, a mobile or another telephone number...

engineer who is credited with patenting the first practical telephone. He also co-founded the American Telephone and Telegraph Company (AT&T) in 1885. Bell's...

switched telephone network (PSTN), also known as plain old telephone service (POTS). The steps and principles involved in originating VoIP telephone calls...

traditional solely telephone companies now function as internet service providers (ISPs), and the distinction between a telephone company and ISP has...

Telephone numbers in Europe are managed by the national telecommunications authorities of each country. Most country codes start with 3 and 4, but some...

Telephone numbers in the People's Republic of China are administered according to the Telecommunications Network Numbering Plan of China. The structure...

push-button telephone is a telephone that has buttons or keys for dialing a telephone number, in contrast to a rotary dial used in earlier telephones. Western...