TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION

Introduced: September 1968

Last revised: January 1985

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC COMMUNICATION TECHNIQUE
Subclass:: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION

Description

Covers the transmission, routing, and processing of digital information over communication networks and systems. Encompasses telegraphic communication, data transmission protocols, network architectures, error detection and correction, signal modulation and coding, and digital signal processing for communication purposes. Includes technologies for packet switching, circuit switching, and modern data communication standards, but excludes specific applications in broadcast television (H04H), telephony systems (H04M), and radio communication (H04B).

Scope Notes

Application references: Systems specially adapted for transmission of measured values, control or similar signals Arrangements specially adapted for telephonic communication

Related Keywords

CIRCUITS for telegraphy, other than route selectionCODE(S) for use in telegraphyDATA transmissiontelegraph KEYBOARDSMONITORING of telegraphic communication systemsMONITORING of transmission systems of digital informationPRINTING -telegraphstelegraphic RECEIVERSREPEATERS in telegraphic telecommunication transmission systemstelegraphic equipment for SUBSCRIBERSSYNCHRONISATION in transmission of digital informationtelegraphy in generaltelegraphic communicationTELEPRINTERStelegraphic TERMINAL(S) equipmentTRANSMISSION of digital informationtelegraphic TRANSMITTERS

24 direct subcodes

Child Classifications

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H04L 1/00 Arrangements for detecting or preventing errors in the information received
H04L 101/00 Indexing scheme associated with group
H04L 12/00 Data switching networks
H04L 13/00 Details of the apparatus or circuits covered by groups or
H04L 15/00 Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
H04L 17/00 Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
H04L 19/00 Apparatus or local circuits for step-by-step systems
H04L 21/00 Apparatus or local circuits for mosaic printer telegraph systems
H04L 23/00 Apparatus or local circuits for telegraphic systems other than those covered by groups
H04L 25/00 Baseband systems
H04L 27/00 Modulated-carrier systems
H04L 41/00 Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
H04L 43/00 Arrangements for monitoring or testing data switching networks
H04L 45/00 Routing or path finding of packets in data switching networks
H04L 47/00 Traffic control in data switching networks
H04L 49/00 Packet switching elements
H04L 5/00 Arrangements affording multiple use of the transmission path
H04L 51/00 User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
H04L 61/00 Network arrangements, protocols or services for addressing or naming
H04L 65/00 Network arrangements, protocols or services for supporting real-time applications in data packet communication