Tape relay
Encyclopedia
A tape relay is a method of retransmitting teletypewriter traffic
Traffic
Traffic on roads may consist of pedestrians, ridden or herded animals, vehicles, streetcars and other conveyances, either singly or together, while using the public way for purposes of travel...

 from one channel
Channel (communications)
In telecommunications and computer networking, a communication channel, or channel, refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel...

 to another, in which messages arriving on an incoming channel are recorded in the form of perforated tape, this punched tape
Punched tape
Punched tape or paper tape is an obsolete form of data storage, consisting of a long strip of paper in which holes are punched to store data...

 then being either fed directly and automatically into an outgoing channel, or manually transferred to an automatic transmitter for transmission
Transmission (telecommunications)
Transmission, in telecommunications, is the process of sending, propagating and receiving an analogue or digital information signal over a physical point-to-point or point-to-multipoint transmission medium, either wired, optical fiber or wireless...

on an outgoing channel. Tape relay, sometimes informally called "torn tape operation" was commonplace during much of the 20th century.
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