transmission time
The amount of time from the beginning until the end of a message transmission.
Electrical engineering
651 entries in this trade.
tree-and-branch
adjectiveElectrical engineering
Of cable television and similar networks: consisting of a main central cable with a separate cable branching off it to each subscriber.
trellis
A kind of graph, used in communication theory and encryption, whose nodes are ordered into vertical slices by time, with each node at each time connected to at least one node at an earlier and at least one node at a later time.
trip-switch
A device to halt the current flow, a cut-out or trip.
trombone
To transmit a signal or data back to a central switching point before sending it out to its destination.
truck roll
The dispatching of service personnel to a client's location (as opposed to remotely addressing an issue)
trunk call
a long-distance telephone call, especially one connected by the operator
Turing switch
A logical construction modelling the operation of the network switch, just as in theoretical computer science a Turing machine models the operation of a computer.
turn-off time
The amount of time between the moment the anode current reaches zero and the moment the reverse voltage due to the practical circuit reaches zero.
turn-on time
The amount of time required for a device to change from a forward blocking mode to a forward conduction mode when a gate pulse is applied.
two-way switch
A plain type of light switch that can control lights, or other electrical loads, from a single location; a single-throw switch.
UC
Initialism of ultra capacity.
ultra high frequency
The frequency area from 300 MHz through 3 GHz, commonly used for TV broadcasting.
ultra low frequency
Ultra Low Frequency, the band of radio waves between 300 hertz and 3000 hertz.
UMTS
Initialism of Universal Mobile Telecommunications System.
unhold
To remove from a "hold" or "on hold" state.
unit
One kilowatt-hour (as recorded on an electricity meter).
unlock
To configure (a mobile phone) so that it is not bound to any particular carrier.
unlocked
adjectiveElectrical engineering
Not bound to any particular carrier.
uplead
The line or lines connecting the output of a transmitter to its antenna.
uplink
The communication path from a mobile device to a base station, a consumer to the network backbone, a client device to a server, etc.
vanity number
A phone number that is registered as a mnemonic whose letters translate into numbers.
video conference
A conference held by videolink; an arranged video phone call between more than two parties.
Vmp
Initialism of voltage at maximum power; used when analysing solar panels.
voice over broadband
A transmission technique that enables a user to make and receive telephone calls over a broadband connection.
voice over IP
Voice over Internet Protocol (also "VoIP"), a telecommunications system that uses the Internet or other Internet Protocol network to transmit telephone calls.
Voice over NR
A 5G high-speed wireless communication standard for mobile phones and data terminals, including Internet of things (IoT) devices and wearables.
VoIP
Voice over Internet Protocol, a telecommunications system that uses the Internet or other Internet Protocol network to transmit telephone calls.
voltage
The difference in electrostatic potential between two points in space, especially between live and neutral conductors or the earth.
Wabun code
A form of Morse code used to encode Japanese-language messages written in kana for transmission via telegram.
WAE
Acronym of Wireless Application Environment.
WAP
Wireless Application Protocol, an open international standard for applications that use wireless communication, such as Internet access from a cellular phone.
watch receiver
A small telephone receiver resembling a pocket watch.
wavelet modulation
A method of modulating signals that uses wavelets to represent the data being transmitted.
webphone
A telephone that connects through the Internet.
wild
adjectiveElectrical engineering
Of unregulated and varying frequency.
WiMAX
Worldwide Interoperability for Microwave Access: a telecommunications technology providing wireless data, voice and video over long distances.
window detector
A special type of comparator which provides an indication of whether the input voltage is within a specified range.
wireless internet
A type of internet service that uses the same technology that connects cell phones.
wireless telegraphy
Telegraphy by radio rather than by transmission cables.
WLNP
Initialism of wireless local number portability.
WNP
Initialism of wireless number portability.
word
A unit of text equivalent to five characters and one space.
WPT
Abbreviation of wireless-power transfer.
WSPR
Abbreviation of weak signal propagation reporter
WTAI
Initialism of Wireless Telephony Applications Interface: a protocol used in conjunction with the Wireless Application Protocol (WAP) to allow a telephone number to be linked to a web page.
XNOR gate
A logic gate performing a Boolean logic XNOR operation; an equivalence gate.
XOR
A logic gate that implements "exclusive or".
XOR gate
A logic gate performing a Boolean logic XOR operation.
Zepp antenna
A horizontal antenna which is fed at one end by one lead of a two-wire transmission line.
zero prefix
The digit 0 that begins all telephone numbers in the United Kingdom, which is substituted for the country code in the event of international calls.