Carterfone

Carterfone decisionCarterphoneCarterphone decisionany lawful deviceCarterfone rulingruling which permitted third-party devices
The Carterfone is a device invented by Thomas Carter.wikipedia
62 Related Articles

Acoustic coupler

acousticACacoustic coupling
The device was acoustically, but not electrically, connected to the public switched telephone network. When callers on the radio and on the telephone were both in contact with the base station operator, the handset of the operator's telephone was placed on a cradle built into the Carterfone device.
A second court decision in 1968 regarding the Carterfone further allowed any device not harmful to the system to be connected directly to the AT&T network.

Autopatch

phone patchpatch
This makes it a direct predecessor to today's autopatch.
The fact of connecting a ham radio station to a telephone network exists from the beginning of the ham radio operators, even commercially, as the case of Carterfone (with lawsuits filed by the companies to which it was connected ), but it was not possible to talk about mobile telephony until the arrival of the cellular network AMPS, initially using a car phone as the cellular terminal, and finally with the arrival of the DynaTAC the first mobile phone "properly talking" (being able to hold the whole unit in the hand).

Modem

modemsdial-up modem56k modem
The decision is often referred to as "any lawful device", allowing later innovations like answering machines, fax machines, and modems (which initially used the same type of manual acoustic coupler as the Carterfone) to proliferate.
However, the FCC's seminal Carterfone Decision of 1968, the FCC concluded that electronic devices could be connected to the telephone system as long as they used an acoustic coupler.

Fax

fax machinefacsimilefax machines
The decision is often referred to as "any lawful device", allowing later innovations like answering machines, fax machines, and modems (which initially used the same type of manual acoustic coupler as the Carterfone) to proliferate.
Since the 1968 Carterphone decision, most fax machines have been designed to connect to standard PSTN lines and telephone numbers.

Cordless telephone

cordless phonecordless phonescordless telephones
The Carterfone coupler, a crude device for interconnecting a two-way radio with the telephone, led to the reversal of the Federal Communications Commission ban on direct coupling of consumer equipment to phone lines (known as the landmark Carterfone decision) on June 26, 1968.

Federal Communications Commission

FCCU.S. Federal Communications CommissionFederal Communications Commission (FCC)
In 1968, the Federal Communications Commission extended this privilege by allowing the Carterfone and other devices to be connected electrically to the AT&T network, as long as they did not cause harm to the system.
In mobile telephony, the FCC abandoned the "any lawful device" principle decided against AT&T landlines, and has instead allowed each mobile phone company to dictate what its customers can use.

Hush-A-Phone Corp. v. United States

Hush-A-Phone v. United StatesHush-A-PhoneHush-a-phone Decision
It and the related Carterfone decision were seen as precursors to the entry of MCI Communications and the development of more pervasive telecom competition.

Interconnection

interconnectinterconnectivityinterconnected
This further changed in FCC's Carterfone decision in 1968, which required the Bell System companies to permit interconnection by radio-telephone operators.

Invention

inventorinventionsinventors
The Carterfone is a device invented by Thomas Carter.

Two-way radio

two way radioRadio Operatortwo-way radios
It manually connects a two-way radio system to the telephone system, allowing someone on the radio to talk to someone on the phone. When someone on a two-way radio wished to speak to someone on phone, or "landline" (e.g., "Central dispatch, patch me through to McGarrett"), the station operator at the base would dial the telephone number.

Public switched telephone network

PSTNpublic telephone networktelephone network
It manually connects a two-way radio system to the telephone system, allowing someone on the radio to talk to someone on the phone.

Base station

base stationsWireless base stationradio base station
It was electrically connected to the base station of the mobile radio system, and got its power from the base station.

Mobile radio

land mobilemobileland-mobile radio systems
It was electrically connected to the base station of the mobile radio system, and got its power from the base station.

Bakelite

Bakelite CorporationBakerlitephenolic resin
All electrical parts were encased in bakelite, an early plastic.

Plastic

plasticsadditivesadditive
All electrical parts were encased in bakelite, an early plastic.

Telephone

phonetelephonesLocal Telephone Service
When someone on a two-way radio wished to speak to someone on phone, or "landline" (e.g., "Central dispatch, patch me through to McGarrett"), the station operator at the base would dial the telephone number.

Landline

Fixed linefixed-lineland line
When someone on a two-way radio wished to speak to someone on phone, or "landline" (e.g., "Central dispatch, patch me through to McGarrett"), the station operator at the base would dial the telephone number.

Dispatch (logistics)

dispatchdispatchingdispatched
When someone on a two-way radio wished to speak to someone on phone, or "landline" (e.g., "Central dispatch, patch me through to McGarrett"), the station operator at the base would dial the telephone number.

Steve McGarrett

Steven "Steve" McGarrettMcGarrettSteve
When someone on a two-way radio wished to speak to someone on phone, or "landline" (e.g., "Central dispatch, patch me through to McGarrett"), the station operator at the base would dial the telephone number.

Telephone number

phone numbertelephone numbersphone numbers
When someone on a two-way radio wished to speak to someone on phone, or "landline" (e.g., "Central dispatch, patch me through to McGarrett"), the station operator at the base would dial the telephone number.

Switchboard operator

telephone operatoroperatortelephonist
When callers on the radio and on the telephone were both in contact with the base station operator, the handset of the operator's telephone was placed on a cradle built into the Carterfone device.

Voice-operated switch

VOXVORvoice operated switch
A voice-operated switch in the Carterfone automatically switched on the radio transmitter when the telephone caller was speaking; when he stopped speaking, the radio returned to a receiving condition.

Transmitter

radio transmittertransmittersradio transmitters
A voice-operated switch in the Carterfone automatically switched on the radio transmitter when the telephone caller was speaking; when he stopped speaking, the radio returned to a receiving condition.

Telephone call

callphone callphone calls
A voice-operated switch in the Carterfone automatically switched on the radio transmitter when the telephone caller was speaking; when he stopped speaking, the radio returned to a receiving condition.

Loudspeaker

loudspeakersspeakerspeakers
A separate speaker was attached to the Carterfone to allow the base station operator to monitor the conversation, adjust the voice volume, and hang up his telephone when the conversation had ended.